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145879315902 = 23329591578883
BaseRepresentation
bin1000011111011100010…
…1011011010110111110
3111221112120200001222000
42013313011123112332
54342230101102102
6151003244003130
713353011503665
oct2076705332676
9457476601860
10145879315902
115695a086201
12243328304a6
13109aa954648
1470bc3c3ddc
153bdbe6b01c
hex21f715b5be

145879315902 has 64 divisors (see below), whose sum is σ = 341038944000. Its totient is φ = 46153878624.

The previous prime is 145879315853. The next prime is 145879315903. The reversal of 145879315902 is 209513978541.

It is a happy number.

145879315902 is a `hidden beast` number, since 1 + 4 + 587 + 9 + 3 + 1 + 59 + 0 + 2 = 666.

145879315902 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145879315903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 697048 + ... + 881835.

It is an arithmetic number, because the mean of its divisors is an integer number (5328733500).

Almost surely, 2145879315902 is an apocalyptic number.

145879315902 is an abundant number, since it is smaller than the sum of its proper divisors (195159628098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145879315902 is a wasteful number, since it uses less digits than its factorization.

145879315902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1578982 (or 1578976 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 54.

The spelling of 145879315902 in words is "one hundred forty-five billion, eight hundred seventy-nine million, three hundred fifteen thousand, nine hundred two".

Divisors: 1 2 3 6 9 18 27 29 54 58 59 87 118 174 177 261 354 522 531 783 1062 1566 1593 1711 3186 3422 5133 10266 15399 30798 46197 92394 1578883 3157766 4736649 9473298 14209947 28419894 42629841 45787607 85259682 91575214 93154097 137362821 186308194 274725642 279462291 412088463 558924582 824176926 838386873 1236265389 1676773746 2472530778 2515160619 2701468813 5030321238 5402937626 8104406439 16208812878 24313219317 48626438634 72939657951 145879315902