20365351564012 has 48 divisors (see below), whose sum is σ = 44252009750592. Its totient is φ = 7985325035520.

The previous prime is 20365351564009. The next prime is 20365351564039. The reversal of 20365351564012 is 21046515356302.

It is a super-2 number, since 2×20365351564012² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20365351564012.

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 15 ways as a sum of consecutive naturals, for example, 247519789 + ... + 247602052.

It is an arithmetic number, because the mean of its divisors is an integer number (921916869804).

Almost surely, 2^{20365351564012} is an apocalyptic number.

It is an amenable number.

20365351564012 is an abundant number, since it is smaller than the sum of its proper divisors (23886658186580).

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

20365351564012 is a wasteful number, since it uses less digits than its factorization.

20365351564012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495121978 (or 495121976 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 43.

The spelling of 20365351564012 in words is "twenty trillion, three hundred sixty-five billion, three hundred fifty-one million, five hundred sixty-four thousand, twelve".