172257315557080 has 64 divisors (see below), whose sum is σ = 417668964148800. Its totient is φ = 63560607720960.

The previous prime is 172257315557027. The next prime is 172257315557081. The reversal of 172257315557080 is 80755513752271.

It is a super-3 number, since 3×172257315557080³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172257315557081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108831775 + ... + 110403214.

It is an arithmetic number, because the mean of its divisors is an integer number (6526077564825).

Almost surely, 2^{172257315557080} is an apocalyptic number.

172257315557080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172257315557080 is an abundant number, since it is smaller than the sum of its proper divisors (245411648591720).

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

172257315557080 is a wasteful number, since it uses less digits than its factorization.

172257315557080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219236524 (or 219236520 counting only the distinct ones).

The product of its (nonzero) digits is 20580000, while the sum is 58.

The spelling of 172257315557080 in words is "one hundred seventy-two trillion, two hundred fifty-seven billion, three hundred fifteen million, five hundred fifty-seven thousand, eighty".