72671160172 has 24 divisors (see below), whose sum is σ = 136966938752. Its totient is φ = 33538147200.

The previous prime is 72671160167. The next prime is 72671160173. The reversal of 72671160172 is 27106117627.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (72671160173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 838597 + ... + 921187.

Almost surely, 2^72671160172 is an apocalyptic number.

It is an amenable number.

72671160172 is a deficient number, since it is larger than the sum of its proper divisors (64295778580).

72671160172 is a wasteful number, since it uses less digits than its factorization.

72671160172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99529 (or 99527 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 40.

Adding to 72671160172 its reverse (27106117627), we get a palindrome (99777277799).

It can be divided in two parts, 72 and 671160172, that multiplied together give a palindrome (48323532384).

The spelling of 72671160172 in words is "seventy-two billion, six hundred seventy-one million, one hundred sixty thousand, one hundred seventy-two".