115857397488 has 80 divisors (see below), whose sum is σ = 353850209280. Its totient is φ = 31960658688.

The previous prime is 115857397471. The next prime is 115857397553. The reversal of 115857397488 is 884793758511.

It is a congruent number.

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, 5935320 + ... + 5954807.

It is an arithmetic number, because the mean of its divisors is an integer number (4423127616).

Almost surely, 2^115857397488 is an apocalyptic number.

It is an amenable number.

115857397488 is an abundant number, since it is smaller than the sum of its proper divisors (237992811792).

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

115857397488 is a wasteful number, since it uses less digits than its factorization.

115857397488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11890174 (or 11890168 counting only the distinct ones).

The product of its digits is 67737600, while the sum is 66.

The spelling of 115857397488 in words is "one hundred fifteen billion, eight hundred fifty-seven million, three hundred ninety-seven thousand, four hundred eighty-eight".