2115788656 has 10 divisors (see below), whose sum is σ = 4099340552. Its totient is φ = 1057894320.

The previous prime is 2115788651. The next prime is 2115788659. The reversal of 2115788656 is 6568875112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115788651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66118380 + ... + 66118411.

Almost surely, 2^2115788656 is an apocalyptic number.

It is an amenable number.

2115788656 is a deficient number, since it is larger than the sum of its proper divisors (1983551896).

2115788656 is a wasteful number, since it uses less digits than its factorization.

2115788656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132236799 (or 132236793 counting only the distinct ones).

The product of its digits is 806400, while the sum is 49.

The square root of 2115788656 is about 45997.7027252449. The cubic root of 2115788656 is about 1283.7804608429.

The spelling of 2115788656 in words is "two billion, one hundred fifteen million, seven hundred eighty-eight thousand, six hundred fifty-six".