172680812140 has 24 divisors (see below), whose sum is σ = 365838822720. Its totient is φ = 68461064448.

The previous prime is 172680812123. The next prime is 172680812173. The reversal of 172680812140 is 41218086271.

It is a junction number, because it is equal to n+sod(n) for n = 172680812093 and 172680812102.

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, 38201460 + ... + 38205979.

It is an arithmetic number, because the mean of its divisors is an integer number (15243284280).

Almost surely, 2^172680812140 is an apocalyptic number.

172680812140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172680812140 is an abundant number, since it is smaller than the sum of its proper divisors (193158010580).

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

172680812140 is a wasteful number, since it uses less digits than its factorization.

172680812140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76407561 (or 76407559 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 40.

The spelling of 172680812140 in words is "one hundred seventy-two billion, six hundred eighty million, eight hundred twelve thousand, one hundred forty".