2157056696 has 24 divisors (see below), whose sum is σ = 4296391320. Its totient is φ = 1015084416.

The previous prime is 2157056689. The next prime is 2157056701. The reversal of 2157056696 is 6966507512.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2157056696.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 464180 + ... + 468803.

It is an arithmetic number, because the mean of its divisors is an integer number (179016305).

Almost surely, 2^2157056696 is an apocalyptic number.

It is an amenable number.

2157056696 is a deficient number, since it is larger than the sum of its proper divisors (2139334624).

2157056696 is a wasteful number, since it uses less digits than its factorization.

2157056696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933023 (or 933002 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 47.

The square root of 2157056696 is about 46444.1244507849. The cubic root of 2157056696 is about 1292.0734030319.

The spelling of 2157056696 in words is "two billion, one hundred fifty-seven million, fifty-six thousand, six hundred ninety-six".