172056520199 has 8 divisors (see below), whose sum is σ = 177701615232. Its totient is φ = 166417355520.

The previous prime is 172056520183. The next prime is 172056520247. The reversal of 172056520199 is 991025650271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 172056520199 - 2⁴ = 172056520183 is a prime.

It is a super-2 number, since 2×172056520199² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172056520159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1423574 + ... + 1539699.

It is an arithmetic number, because the mean of its divisors is an integer number (22212701904).

Almost surely, 2^172056520199 is an apocalyptic number.

172056520199 is a deficient number, since it is larger than the sum of its proper divisors (5645095033).

172056520199 is a wasteful number, since it uses less digits than its factorization.

172056520199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2965177.

The product of its (nonzero) digits is 340200, while the sum is 47.

The spelling of 172056520199 in words is "one hundred seventy-two billion, fifty-six million, five hundred twenty thousand, one hundred ninety-nine".