2161535512976 has 80 divisors (see below), whose sum is σ = 5166574675200. Its totient is φ = 855540263424.

The previous prime is 2161535512951. The next prime is 2161535513017. The reversal of 2161535512976 is 6792155351612.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14392631 + ... + 14542038.

It is an arithmetic number, because the mean of its divisors is an integer number (64582183440).

Almost surely, 2^{2161535512976} is an apocalyptic number.

It is an amenable number.

2161535512976 is an abundant number, since it is smaller than the sum of its proper divisors (3005039162224).

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

2161535512976 is a wasteful number, since it uses less digits than its factorization.

2161535512976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28934736 (or 28934730 counting only the distinct ones).

The product of its digits is 3402000, while the sum is 53.

The spelling of 2161535512976 in words is "two trillion, one hundred sixty-one billion, five hundred thirty-five million, five hundred twelve thousand, nine hundred seventy-six".