16120657005172 has 6 divisors (see below), whose sum is σ = 28211149759058. Its totient is φ = 8060328502584.

The previous prime is 16120657005163. The next prime is 16120657005179. The reversal of 16120657005172 is 27150075602161.

It can be written as a sum of positive squares in only one way, i.e., 11469371129316 + 4651285875856 = 3386646^2 + 2156684^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16120657005179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2015082125643 + ... + 2015082125650.

Almost surely, 2^{16120657005172} is an apocalyptic number.

It is an amenable number.

16120657005172 is a deficient number, since it is larger than the sum of its proper divisors (12090492753886).

16120657005172 is a wasteful number, since it uses less digits than its factorization.

16120657005172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4030164251297 (or 4030164251295 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 43.

The spelling of 16120657005172 in words is "sixteen trillion, one hundred twenty billion, six hundred fifty-seven million, five thousand, one hundred seventy-two".