172871455968 has 36 divisors (see below), whose sum is σ = 491603203728. Its totient is φ = 57623818560.

The previous prime is 172871455963. The next prime is 172871455979. The reversal of 172871455968 is 869554178271.

172871455968 is a `hidden beast` number, since 1 + 7 + 2 + 8 + 7 + 14 + 559 + 68 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172871455963) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 300123768 + ... + 300124343.

It is an arithmetic number, because the mean of its divisors is an integer number (13655644548).

Almost surely, 2^172871455968 is an apocalyptic number.

172871455968 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

172871455968 is an abundant number, since it is smaller than the sum of its proper divisors (318731747760).

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

172871455968 is a wasteful number, since it uses less digits than its factorization.

172871455968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600248127 (or 600248116 counting only the distinct ones).

The product of its digits is 33868800, while the sum is 63.

The spelling of 172871455968 in words is "one hundred seventy-two billion, eight hundred seventy-one million, four hundred fifty-five thousand, nine hundred sixty-eight".