13161315165512 has 128 divisors (see below), whose sum is σ = 26464374367200. Its totient is φ = 6114567782400.

The previous prime is 13161315165491. The next prime is 13161315165521. The reversal of 13161315165512 is 21556151316131.

It can be written as a sum of positive squares in 16 ways, for example, as 247253584516 + 12914061580996 = 497246^2 + 3593614^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13161315165512.

It is an unprimeable number.

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, 5700005414 + ... + 5700007722.

Almost surely, 2^{13161315165512} is an apocalyptic number.

It is an amenable number.

13161315165512 is an abundant number, since it is smaller than the sum of its proper divisors (13303059201688).

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

13161315165512 is a wasteful number, since it uses less digits than its factorization.

13161315165512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3747 (or 3743 counting only the distinct ones).

The product of its digits is 81000, while the sum is 41.

The spelling of 13161315165512 in words is "thirteen trillion, one hundred sixty-one billion, three hundred fifteen million, one hundred sixty-five thousand, five hundred twelve".