115989212388 has 48 divisors (see below), whose sum is σ = 309330975744. Its totient is φ = 33136945440.

The previous prime is 115989212371. The next prime is 115989212393. The reversal of 115989212388 is 883212989511.

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, 1055353 + ... + 1160063.

It is an arithmetic number, because the mean of its divisors is an integer number (6444395328).

Almost surely, 2^115989212388 is an apocalyptic number.

It is an amenable number.

115989212388 is an abundant number, since it is smaller than the sum of its proper divisors (193341763356).

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

115989212388 is a wasteful number, since it uses less digits than its factorization.

115989212388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117912 (or 117910 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 57.

The spelling of 115989212388 in words is "one hundred fifteen billion, nine hundred eighty-nine million, two hundred twelve thousand, three hundred eighty-eight".