2156615366056 has 16 divisors (see below), whose sum is σ = 4043691966240. Its totient is φ = 1078297508400.

The previous prime is 2156615366023. The next prime is 2156615366077. The reversal of 2156615366056 is 6506635166512.

It is a junction number, because it is equal to n+sod(n) for n = 2156615365994 and 2156615366012.

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, 329970 + ... + 2102881.

It is an arithmetic number, because the mean of its divisors is an integer number (252730747890).

Almost surely, 2^{2156615366056} is an apocalyptic number.

It is an amenable number.

2156615366056 is a deficient number, since it is larger than the sum of its proper divisors (1887076600184).

2156615366056 is a wasteful number, since it uses less digits than its factorization.

2156615366056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2543664 (or 2543660 counting only the distinct ones).

The product of its (nonzero) digits is 5832000, while the sum is 52.

The spelling of 2156615366056 in words is "two trillion, one hundred fifty-six billion, six hundred fifteen million, three hundred sixty-six thousand, fifty-six".