216870036670 has 16 divisors (see below), whose sum is σ = 446132647008. Its totient is φ = 74355441120.

The previous prime is 216870036661. The next prime is 216870036707. The reversal of 216870036670 is 76630078612.

It is a super-2 number, since 2×216870036670² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 216870036670.

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, 1549071621 + ... + 1549071760.

It is an arithmetic number, because the mean of its divisors is an integer number (27883290438).

Almost surely, 2^216870036670 is an apocalyptic number.

216870036670 is an abundant number, since it is smaller than the sum of its proper divisors (229262610338).

216870036670 is a wasteful number, since it uses less digits than its factorization.

216870036670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3098143395.

The product of its (nonzero) digits is 508032, while the sum is 46.

The spelling of 216870036670 in words is "two hundred sixteen billion, eight hundred seventy million, thirty-six thousand, six hundred seventy".