172007757380 has 24 divisors (see below), whose sum is σ = 364530206040. Its totient is φ = 68171880960.

The previous prime is 172007757373. The next prime is 172007757401. The reversal of 172007757380 is 83757700271.

It can be written as a sum of positive squares in 4 ways, for example, as 19789174276 + 152218583104 = 140674^2 + 390152^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39449141 + ... + 39453500.

It is an arithmetic number, because the mean of its divisors is an integer number (15188758585).

Almost surely, 2^172007757380 is an apocalyptic number.

172007757380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172007757380 is an abundant number, since it is smaller than the sum of its proper divisors (192522448660).

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

172007757380 is a wasteful number, since it uses less digits than its factorization.

172007757380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78902759 (or 78902757 counting only the distinct ones).

The product of its (nonzero) digits is 576240, while the sum is 47.

The spelling of 172007757380 in words is "one hundred seventy-two billion, seven million, seven hundred fifty-seven thousand, three hundred eighty".