13523868756 has 24 divisors (see below), whose sum is σ = 35061882240. Its totient is φ = 4507956216.

The previous prime is 13523868751. The next prime is 13523868763. The reversal of 13523868756 is 65786832531.

13523868756 is a `hidden beast` number, since 1 + 3 + 523 + 8 + 68 + 7 + 56 = 666.

It is a super-2 number, since 2×13523868756² (a number of 21 digits) contains 22 as substring.

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 (13523868751) 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, 62610396 + ... + 62610611.

It is an arithmetic number, because the mean of its divisors is an integer number (1460911760).

Almost surely, 2^13523868756 is an apocalyptic number.

It is an amenable number.

13523868756 is an abundant number, since it is smaller than the sum of its proper divisors (21538013484).

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

13523868756 is a wasteful number, since it uses less digits than its factorization.

13523868756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125221020 (or 125221012 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 54.

The spelling of 13523868756 in words is "thirteen billion, five hundred twenty-three million, eight hundred sixty-eight thousand, seven hundred fifty-six".