215151620671204 has 48 divisors (see below), whose sum is σ = 440057964342528. Its totient is φ = 90139895774208.

The previous prime is 215151620671187. The next prime is 215151620671243. The reversal of 215151620671204 is 402176026151512.

It is a happy number.

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, 465521632 + ... + 465983575.

It is an arithmetic number, because the mean of its divisors is an integer number (9167874257136).

Almost surely, 2^{215151620671204} is an apocalyptic number.

It is an amenable number.

215151620671204 is an abundant number, since it is smaller than the sum of its proper divisors (224906343671324).

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

215151620671204 is a wasteful number, since it uses less digits than its factorization.

215151620671204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931505404 (or 931505402 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 43.

The spelling of 215151620671204 in words is "two hundred fifteen trillion, one hundred fifty-one billion, six hundred twenty million, six hundred seventy-one thousand, two hundred four".