215368560520 has 64 divisors (see below), whose sum is σ = 512411235840. Its totient is φ = 81335078400.

The previous prime is 215368560493. The next prime is 215368560587. The reversal of 215368560520 is 25065863512.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2067262 + ... + 2168941.

It is an arithmetic number, because the mean of its divisors is an integer number (8006425560).

Almost surely, 2^215368560520 is an apocalyptic number.

215368560520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215368560520 is an abundant number, since it is smaller than the sum of its proper divisors (297042675320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215368560520 is a wasteful number, since it uses less digits than its factorization.

215368560520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4236286 (or 4236282 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 43.

The spelling of 215368560520 in words is "two hundred fifteen billion, three hundred sixty-eight million, five hundred sixty thousand, five hundred twenty".