172056520200 has 96 divisors (see below), whose sum is σ = 534333836160. Its totient is φ = 45799276800.

The previous prime is 172056520183. The next prime is 172056520247. The reversal of 172056520200 is 2025650271.

It is a super-2 number, since 2×172056520200² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76785 + ... + 591615.

It is an arithmetic number, because the mean of its divisors is an integer number (5565977460).

Almost surely, 2^172056520200 is an apocalyptic number.

172056520200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172056520200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267166918080).

172056520200 is an abundant number, since it is smaller than the sum of its proper divisors (362277315960).

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

172056520200 is a wasteful number, since it uses less digits than its factorization.

172056520200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515407 (or 515398 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The spelling of 172056520200 in words is "one hundred seventy-two billion, fifty-six million, five hundred twenty thousand, two hundred".