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68787453045 = 3522334759263
BaseRepresentation
bin100000000010000001…
…1010011110001110101
320120112220201200011010
41000010003103301311
52111334041444140
651333413502433
74653421463223
oct1000403236165
9216486650133
1068787453045
11271997a6653
12113b8941a19
13664317c24c
14348797bb13
151bc8e47880
hex10040d3c75

68787453045 has 32 divisors (see below), whose sum is σ = 110873935872. Its totient is φ = 36416261952.

The previous prime is 68787453023. The next prime is 68787453047. The reversal of 68787453045 is 54035478786.

It is not a de Polignac number, because 68787453045 - 27 = 68787452917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68787453047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1131084 + ... + 1190346.

It is an arithmetic number, because the mean of its divisors is an integer number (3464810496).

Almost surely, 268787453045 is an apocalyptic number.

It is an amenable number.

68787453045 is a deficient number, since it is larger than the sum of its proper divisors (42086482827).

68787453045 is a wasteful number, since it uses less digits than its factorization.

68787453045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59841.

The product of its (nonzero) digits is 22579200, while the sum is 57.

The spelling of 68787453045 in words is "sixty-eight billion, seven hundred eighty-seven million, four hundred fifty-three thousand, forty-five".

Divisors: 1 3 5 15 223 347 669 1041 1115 1735 3345 5205 59263 77381 177789 232143 296315 386905 888945 1160715 13215649 20564261 39646947 61692783 66078245 102821305 198234735 308463915 4585830203 13757490609 22929151015 68787453045