172527322421 has 8 divisors (see below), whose sum is σ = 177972891744. Its totient is φ = 167166180720.

The previous prime is 172527322397. The next prime is 172527322427. The reversal of 172527322421 is 124223725271.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172527322421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172527322427) 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, 21102755 + ... + 21110928.

It is an arithmetic number, because the mean of its divisors is an integer number (22246611468).

Almost surely, 2^172527322421 is an apocalyptic number.

It is an amenable number.

172527322421 is a deficient number, since it is larger than the sum of its proper divisors (5445569323).

172527322421 is an equidigital number, since it uses as much as digits as its factorization.

172527322421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42213811.

The product of its digits is 94080, while the sum is 38.

The spelling of 172527322421 in words is "one hundred seventy-two billion, five hundred twenty-seven million, three hundred twenty-two thousand, four hundred twenty-one".