215271370172 has 24 divisors (see below), whose sum is σ = 380716483056. Its totient is φ = 106495861248.

The previous prime is 215271370103. The next prime is 215271370199. The reversal of 215271370172 is 271073172512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1325063 + ... + 1478625.

It is an arithmetic number, because the mean of its divisors is an integer number (15863186794).

Almost surely, 2^215271370172 is an apocalyptic number.

It is an amenable number.

215271370172 is a deficient number, since it is larger than the sum of its proper divisors (165445112884).

215271370172 is a wasteful number, since it uses less digits than its factorization.

215271370172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157277 (or 157275 counting only the distinct ones).

The product of its (nonzero) digits is 41160, while the sum is 38.

The spelling of 215271370172 in words is "two hundred fifteen billion, two hundred seventy-one million, three hundred seventy thousand, one hundred seventy-two".