2131694416536 has 32 divisors (see below), whose sum is σ = 5642720515440. Its totient is φ = 668766875648.

The previous prime is 2131694416507. The next prime is 2131694416543. The reversal of 2131694416536 is 6356144961312.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2612370201 + ... + 2612371016.

Almost surely, 2^{2131694416536} is an apocalyptic number.

It is an amenable number.

2131694416536 is an abundant number, since it is smaller than the sum of its proper divisors (3511026098904).

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

2131694416536 is a wasteful number, since it uses less digits than its factorization.

2131694416536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5224741243 (or 5224741239 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 51.

The spelling of 2131694416536 in words is "two trillion, one hundred thirty-one billion, six hundred ninety-four million, four hundred sixteen thousand, five hundred thirty-six".