215347063856 has 20 divisors (see below), whose sum is σ = 417638874312. Its totient is φ = 107569289856.

The previous prime is 215347063843. The next prime is 215347063861. The reversal of 215347063856 is 658360743512.

It is a super-2 number, since 2×215347063856² (a number of 23 digits) contains 22 as substring.

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, 6498086 + ... + 6531141.

Almost surely, 2^215347063856 is an apocalyptic number.

It is an amenable number.

215347063856 is a deficient number, since it is larger than the sum of its proper divisors (202291810456).

215347063856 is a wasteful number, since it uses less digits than its factorization.

215347063856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13030268 (or 13030262 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 50.

The spelling of 215347063856 in words is "two hundred fifteen billion, three hundred forty-seven million, sixty-three thousand, eight hundred fifty-six".