172580757982 has 16 divisors (see below), whose sum is σ = 259560120960. Its totient is φ = 86060924928.

The previous prime is 172580757967. The next prime is 172580757983. The reversal of 172580757982 is 289757085271.

It is a self number, because there is not a number n which added to its sum of digits gives 172580757982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172580757983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1651678 + ... + 1753054.

It is an arithmetic number, because the mean of its divisors is an integer number (16222507560).

Almost surely, 2^172580757982 is an apocalyptic number.

172580757982 is a deficient number, since it is larger than the sum of its proper divisors (86979362978).

172580757982 is a wasteful number, since it uses less digits than its factorization.

172580757982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103635.

The product of its (nonzero) digits is 19756800, while the sum is 61.

The spelling of 172580757982 in words is "one hundred seventy-two billion, five hundred eighty million, seven hundred fifty-seven thousand, nine hundred eighty-two".