2161520512 has 32 divisors (see below), whose sum is σ = 4317323400. Its totient is φ = 1077957120.

The previous prime is 2161520489. The next prime is 2161520527. The reversal of 2161520512 is 2150251612.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28087 + ... + 71497.

Almost surely, 2^2161520512 is an apocalyptic number.

It is an amenable number.

2161520512 is a deficient number, since it is larger than the sum of its proper divisors (2155802888).

2161520512 is an equidigital number, since it uses as much as digits as its factorization.

2161520512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43814 (or 43802 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 2161520512 is about 46492.1553813114. The cubic root of 2161520512 is about 1292.9640617444.

The spelling of 2161520512 in words is "two billion, one hundred sixty-one million, five hundred twenty thousand, five hundred twelve".