172690904620 has 96 divisors (see below), whose sum is σ = 425278526400. Its totient is φ = 58323815424.

The previous prime is 172690904579. The next prime is 172690904699. The reversal of 172690904620 is 26409096271.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 459459 + ... + 745978.

It is an arithmetic number, because the mean of its divisors is an integer number (4429984650).

Almost surely, 2^172690904620 is an apocalyptic number.

172690904620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172690904620 is an abundant number, since it is smaller than the sum of its proper divisors (252587621780).

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

172690904620 is a wasteful number, since it uses less digits than its factorization.

172690904620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1205507 (or 1205505 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 172690904620 in words is "one hundred seventy-two billion, six hundred ninety million, nine hundred four thousand, six hundred twenty".