172171804896 has 216 divisors, whose sum is σ = 613362708504. Its totient is φ = 45407900160.

The previous prime is 172171804853. The next prime is 172171804933. The reversal of 172171804896 is 698408171271.

172171804896 is a `hidden beast` number, since 1 + 72 + 17 + 1 + 80 + 489 + 6 = 666.

It is a super-2 number, since 2×172171804896² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 285790 + ... + 652701.

It is an arithmetic number, because the mean of its divisors is an integer number (2839642169).

Almost surely, 2^172171804896 is an apocalyptic number.

172171804896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

172171804896 is an abundant number, since it is smaller than the sum of its proper divisors (441190903608).

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

172171804896 is a wasteful number, since it uses less digits than its factorization.

172171804896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938534 (or 938516 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 54.

The spelling of 172171804896 in words is "one hundred seventy-two billion, one hundred seventy-one million, eight hundred four thousand, eight hundred ninety-six".