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13123816901 = 136659151603
BaseRepresentation
bin11000011100011110…
…11000110111000101
31020212121202222022122
430032033120313011
5203334144120101
610010132535325
7643135413566
oct141617306705
936777688278
1013123816901
115625063978
122663181545
131311c34040
148c6d9a16d
1551c25d51b
hex30e3d8dc5

13123816901 has 8 divisors (see below), whose sum is σ = 14135556960. Its totient is φ = 12112393392.

The previous prime is 13123816897. The next prime is 13123816903. The reversal of 13123816901 is 10961832131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13123816901 - 22 = 13123816897 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123816903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10766 + ... + 162368.

It is an arithmetic number, because the mean of its divisors is an integer number (1766944620).

Almost surely, 213123816901 is an apocalyptic number.

It is an amenable number.

13123816901 is a deficient number, since it is larger than the sum of its proper divisors (1011740059).

13123816901 is a wasteful number, since it uses less digits than its factorization.

13123816901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158275.

The product of its (nonzero) digits is 7776, while the sum is 35.

The spelling of 13123816901 in words is "thirteen billion, one hundred twenty-three million, eight hundred sixteen thousand, nine hundred one".

Divisors: 1 13 6659 86567 151603 1970839 1009524377 13123816901