213860512170 has 64 divisors (see below), whose sum is σ = 600310224000. Its totient is φ = 54027917568.

The previous prime is 213860512157. The next prime is 213860512211. The reversal of 213860512170 is 71215068312.

213860512170 is a `hidden beast` number, since 2 + 1 + 38 + 605 + 1 + 2 + 17 + 0 = 666.

It is a super-2 number, since 2×213860512170² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20838975 + ... + 20849234.

It is an arithmetic number, because the mean of its divisors is an integer number (9379847250).

Almost surely, 2^213860512170 is an apocalyptic number.

213860512170 is an abundant number, since it is smaller than the sum of its proper divisors (386449711830).

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

213860512170 is a wasteful number, since it uses less digits than its factorization.

213860512170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41688244 (or 41688238 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The spelling of 213860512170 in words is "two hundred thirteen billion, eight hundred sixty million, five hundred twelve thousand, one hundred seventy".