215157379308 has 24 divisors (see below), whose sum is σ = 502044525360. Its totient is φ = 71717606400.

The previous prime is 215157379301. The next prime is 215157379379. The reversal of 215157379308 is 803973751512.

It is not an unprimeable number, because it can be changed into a prime (215157379301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 500008 + ... + 824816.

It is an arithmetic number, because the mean of its divisors is an integer number (20918521890).

Almost surely, 2^215157379308 is an apocalyptic number.

It is an amenable number.

215157379308 is an abundant number, since it is smaller than the sum of its proper divisors (286887146052).

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

215157379308 is a wasteful number, since it uses less digits than its factorization.

215157379308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380017 (or 380015 counting only the distinct ones).

The product of its (nonzero) digits is 1587600, while the sum is 51.

The spelling of 215157379308 in words is "two hundred fifteen billion, one hundred fifty-seven million, three hundred seventy-nine thousand, three hundred eight".