2157696175 has 12 divisors (see below), whose sum is σ = 2677061296. Its totient is φ = 1725177600.

The previous prime is 2157696161. The next prime is 2157696179. The reversal of 2157696175 is 5716967512.

2157696175 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-2157696175 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2157696179) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22207 + ... + 69343.

Almost surely, 2^2157696175 is an apocalyptic number.

2157696175 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2157696175 is a deficient number, since it is larger than the sum of its proper divisors (519365121).

2157696175 is a wasteful number, since it uses less digits than its factorization.

2157696175 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48978 (or 48973 counting only the distinct ones).

The product of its digits is 793800, while the sum is 49.

The square root of 2157696175 is about 46451.0083313592. The cubic root of 2157696175 is about 1292.2010727052.

The spelling of 2157696175 in words is "two billion, one hundred fifty-seven million, six hundred ninety-six thousand, one hundred seventy-five".