162157442742172 has 12 divisors (see below), whose sum is σ = 298711078735720. Its totient is φ = 76811420246256.

The previous prime is 162157442742167. The next prime is 162157442742193. The reversal of 162157442742172 is 271247244751261.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1066825281123 + ... + 1066825281274.

Almost surely, 2^{162157442742172} is an apocalyptic number.

It is an amenable number.

162157442742172 is a deficient number, since it is larger than the sum of its proper divisors (136553635993548).

162157442742172 is a wasteful number, since it uses less digits than its factorization.

162157442742172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2133650562420 (or 2133650562418 counting only the distinct ones).

The product of its digits is 10536960, while the sum is 55.

The spelling of 162157442742172 in words is "one hundred sixty-two trillion, one hundred fifty-seven billion, four hundred forty-two million, seven hundred forty-two thousand, one hundred seventy-two".