20013651170465 has 32 divisors (see below), whose sum is σ = 24361403996160. Its totient is φ = 15781826983104.

The previous prime is 20013651170459. The next prime is 20013651170477. The reversal of 20013651170465 is 56407115631002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20013651170465 - 2¹⁶ = 20013651104929 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 362887022 + ... + 362942168.

It is an arithmetic number, because the mean of its divisors is an integer number (761293874880).

Almost surely, 2^{20013651170465} is an apocalyptic number.

It is an amenable number.

20013651170465 is a deficient number, since it is larger than the sum of its proper divisors (4347752825695).

20013651170465 is a wasteful number, since it uses less digits than its factorization.

20013651170465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57221.

The product of its (nonzero) digits is 151200, while the sum is 41.

The spelling of 20013651170465 in words is "twenty trillion, thirteen billion, six hundred fifty-one million, one hundred seventy thousand, four hundred sixty-five".