215157927908 has 48 divisors (see below), whose sum is σ = 469493539200. Its totient is φ = 83817396480.

The previous prime is 215157927871. The next prime is 215157927913. The reversal of 215157927908 is 809729751512.

215157927908 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2742248 + ... + 2819616.

It is an arithmetic number, because the mean of its divisors is an integer number (9781115400).

Almost surely, 2^215157927908 is an apocalyptic number.

215157927908 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

215157927908 is an abundant number, since it is smaller than the sum of its proper divisors (254335611292).

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

215157927908 is a wasteful number, since it uses less digits than its factorization.

215157927908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86420 (or 86418 counting only the distinct ones).

The product of its (nonzero) digits is 3175200, while the sum is 56.

The spelling of 215157927908 in words is "two hundred fifteen billion, one hundred fifty-seven million, nine hundred twenty-seven thousand, nine hundred eight".