172385957458 has 32 divisors (see below), whose sum is σ = 306792868032. Its totient is φ = 71613624000.

The previous prime is 172385957441. The next prime is 172385957473. The reversal of 172385957458 is 854759583271.

It is a super-2 number, since 2×172385957458² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 172385957458.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2955016 + ... + 3012787.

It is an arithmetic number, because the mean of its divisors is an integer number (9587277126).

Almost surely, 2^172385957458 is an apocalyptic number.

172385957458 is a deficient number, since it is larger than the sum of its proper divisors (134406910574).

172385957458 is a wasteful number, since it uses less digits than its factorization.

172385957458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5967930.

The product of its digits is 84672000, while the sum is 64.

The spelling of 172385957458 in words is "one hundred seventy-two billion, three hundred eighty-five million, nine hundred fifty-seven thousand, four hundred fifty-eight".