215107609872 has 80 divisors (see below), whose sum is σ = 588511440000. Its totient is φ = 67469961216.

The previous prime is 215107609853. The next prime is 215107609909. The reversal of 215107609872 is 278906701512.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 4052818 + ... + 4105550.

It is an arithmetic number, because the mean of its divisors is an integer number (7356393000).

Almost surely, 2^215107609872 is an apocalyptic number.

It is an amenable number.

215107609872 is an abundant number, since it is smaller than the sum of its proper divisors (373403830128).

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

215107609872 is a wasteful number, since it uses less digits than its factorization.

215107609872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57760 (or 57754 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 48.

The spelling of 215107609872 in words is "two hundred fifteen billion, one hundred seven million, six hundred nine thousand, eight hundred seventy-two".