2170979736912 has 120 divisors (see below), whose sum is σ = 7245588764544. Its totient is φ = 593311226112.

The previous prime is 2170979736823. The next prime is 2170979736971. The reversal of 2170979736912 is 2196379790712.

2170979736912 is a `hidden beast` number, since 2 + 170 + 9 + 7 + 97 + 369 + 12 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 2170979736912.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46797463 + ... + 46843830.

Almost surely, 2^{2170979736912} is an apocalyptic number.

It is an amenable number.

2170979736912 is an abundant number, since it is smaller than the sum of its proper divisors (5074609027632).

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

2170979736912 is a wasteful number, since it uses less digits than its factorization.

2170979736912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93641337 (or 93641328 counting only the distinct ones).

The product of its (nonzero) digits is 18003384, while the sum is 63.

The spelling of 2170979736912 in words is "two trillion, one hundred seventy billion, nine hundred seventy-nine million, seven hundred thirty-six thousand, nine hundred twelve".