13520431612608 has 112 divisors (see below), whose sum is σ = 38244831206400. Its totient is φ = 4200522338304.

The previous prime is 13520431612559. The next prime is 13520431612691. The reversal of 13520431612608 is 80621613402531.

It is a self number, because there is not a number n which added to its sum of digits gives 13520431612608.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19772008 + ... + 20444391.

It is an arithmetic number, because the mean of its divisors is an integer number (341471707200).

Almost surely, 2^{13520431612608} is an apocalyptic number.

It is an amenable number.

13520431612608 is an abundant number, since it is smaller than the sum of its proper divisors (24724399593792).

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

13520431612608 is a wasteful number, since it uses less digits than its factorization.

13520431612608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40216534 (or 40216524 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 13520431612608 in words is "thirteen trillion, five hundred twenty billion, four hundred thirty-one million, six hundred twelve thousand, six hundred eight".