215877680120 has 32 divisors (see below), whose sum is σ = 485782909200. Its totient is φ = 86340738048.

The previous prime is 215877680107. The next prime is 215877680141. The reversal of 215877680120 is 21086778512.

It is a super-3 number, since 3×215877680120³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19976 + ... + 657384.

Almost surely, 2^215877680120 is an apocalyptic number.

215877680120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215877680120 is an abundant number, since it is smaller than the sum of its proper divisors (269905229080).

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

215877680120 is a wasteful number, since it uses less digits than its factorization.

215877680120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645887 (or 645883 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 47.

The spelling of 215877680120 in words is "two hundred fifteen billion, eight hundred seventy-seven million, six hundred eighty thousand, one hundred twenty".