115492691990 has 48 divisors (see below), whose sum is σ = 227957976000. Its totient is φ = 42103616256.

The previous prime is 115492691989. The next prime is 115492691999. The reversal of 115492691990 is 99196294511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115492691999) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 299015 + ... + 566034.

It is an arithmetic number, because the mean of its divisors is an integer number (4749124500).

Almost surely, 2^115492691990 is an apocalyptic number.

115492691990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

115492691990 is a deficient number, since it is larger than the sum of its proper divisors (112465284010).

115492691990 is a wasteful number, since it uses less digits than its factorization.

115492691990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865161 (or 865148 counting only the distinct ones).

The product of its (nonzero) digits is 1574640, while the sum is 56.

The spelling of 115492691990 in words is "one hundred fifteen billion, four hundred ninety-two million, six hundred ninety-one thousand, nine hundred ninety".