172112248788 has 24 divisors (see below), whose sum is σ = 406107555840. Its totient is φ = 56726134080.

The previous prime is 172112248769. The next prime is 172112248823. The reversal of 172112248788 is 887842211271.

It is a self number, because there is not a number n which added to its sum of digits gives 172112248788.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80575828 + ... + 80577963.

It is an arithmetic number, because the mean of its divisors is an integer number (16921148160).

Almost surely, 2^172112248788 is an apocalyptic number.

It is an amenable number.

172112248788 is an abundant number, since it is smaller than the sum of its proper divisors (233995307052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172112248788 is a wasteful number, since it uses less digits than its factorization.

172112248788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161153887 (or 161153885 counting only the distinct ones).

The product of its digits is 802816, while the sum is 51.

The spelling of 172112248788 in words is "one hundred seventy-two billion, one hundred twelve million, two hundred forty-eight thousand, seven hundred eighty-eight".