172379999790 has 72 divisors (see below), whose sum is σ = 457927334280. Its totient is φ = 44989905504.

The previous prime is 172379999789. The next prime is 172379999797. The reversal of 172379999790 is 97999973271.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172379999797) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 234720 + ... + 632339.

It is an arithmetic number, because the mean of its divisors is an integer number (6360101865).

Almost surely, 2^172379999790 is an apocalyptic number.

172379999790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172379999790 is an abundant number, since it is smaller than the sum of its proper divisors (285547334490).

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

172379999790 is a wasteful number, since it uses less digits than its factorization.

172379999790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867166 (or 867116 counting only the distinct ones).

The product of its (nonzero) digits is 121522842, while the sum is 72.

The spelling of 172379999790 in words is "one hundred seventy-two billion, three hundred seventy-nine million, nine hundred ninety-nine thousand, seven hundred ninety".