172113748612 has 72 divisors (see below), whose sum is σ = 344747024160. Its totient is φ = 74942599680.

The previous prime is 172113748577. The next prime is 172113748619. The reversal of 172113748612 is 216847311271.

It is a super-2 number, since 2×172113748612² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (172113748619) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3067603 + ... + 3123205.

Almost surely, 2^172113748612 is an apocalyptic number.

It is an amenable number.

172113748612 is an abundant number, since it is smaller than the sum of its proper divisors (172633275548).

172113748612 is a wasteful number, since it uses less digits than its factorization.

172113748612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55893 (or 55878 counting only the distinct ones).

The product of its digits is 112896, while the sum is 43.

The spelling of 172113748612 in words is "one hundred seventy-two billion, one hundred thirteen million, seven hundred forty-eight thousand, six hundred twelve".