13165564512 has 48 divisors (see below), whose sum is σ = 36378538560. Its totient is φ = 4157546112.

The previous prime is 13165564501. The next prime is 13165564537. The reversal of 13165564512 is 21546556131.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3607158 + ... + 3610805.

It is an arithmetic number, because the mean of its divisors is an integer number (757886220).

Almost surely, 2^13165564512 is an apocalyptic number.

13165564512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13165564512 is an abundant number, since it is smaller than the sum of its proper divisors (23212974048).

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

13165564512 is a wasteful number, since it uses less digits than its factorization.

13165564512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7217995 (or 7217987 counting only the distinct ones).

The product of its digits is 108000, while the sum is 39.

The spelling of 13165564512 in words is "thirteen billion, one hundred sixty-five million, five hundred sixty-four thousand, five hundred twelve".