108857540391 has 16 divisors (see below), whose sum is σ = 150052869120. Its totient is φ = 70124060160.

The previous prime is 108857540387. The next prime is 108857540459. The reversal of 108857540391 is 193045758801.

It is not a de Polignac number, because 108857540391 - 2² = 108857540387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108857540191) 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, 826810 + ... + 949383.

It is an arithmetic number, because the mean of its divisors is an integer number (9378304320).

Almost surely, 2^108857540391 is an apocalyptic number.

108857540391 is a deficient number, since it is larger than the sum of its proper divisors (41195328729).

108857540391 is a wasteful number, since it uses less digits than its factorization.

108857540391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1776886.

The product of its (nonzero) digits is 1209600, while the sum is 51.

The spelling of 108857540391 in words is "one hundred eight billion, eight hundred fifty-seven million, five hundred forty thousand, three hundred ninety-one".