115781991160 has 48 divisors (see below), whose sum is σ = 286345143000. Its totient is φ = 42102540480.

The previous prime is 115781991131. The next prime is 115781991173. The reversal of 115781991160 is 61199187511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11956110 + ... + 11965789.

Almost surely, 2^115781991160 is an apocalyptic number.

115781991160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115781991160 is an abundant number, since it is smaller than the sum of its proper divisors (170563151840).

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

115781991160 is a wasteful number, since it uses less digits than its factorization.

115781991160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23921932 (or 23921917 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 49.

The spelling of 115781991160 in words is "one hundred fifteen billion, seven hundred eighty-one million, nine hundred ninety-one thousand, one hundred sixty".