167640123272 has 16 divisors (see below), whose sum is σ = 324464755200. Its totient is φ = 81116188560.

The previous prime is 167640123271. The next prime is 167640123293. The reversal of 167640123272 is 272321046761.

It is not an unprimeable number, because it can be changed into a prime (167640123271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 337983872 + ... + 337984367.

It is an arithmetic number, because the mean of its divisors is an integer number (20279047200).

Almost surely, 2^167640123272 is an apocalyptic number.

It is an amenable number.

167640123272 is a deficient number, since it is larger than the sum of its proper divisors (156824631928).

167640123272 is a wasteful number, since it uses less digits than its factorization.

167640123272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675968276 (or 675968272 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 41.

The spelling of 167640123272 in words is "one hundred sixty-seven billion, six hundred forty million, one hundred twenty-three thousand, two hundred seventy-two".