115668699440 has 40 divisors (see below), whose sum is σ = 307348260000. Its totient is φ = 39657839616.

The previous prime is 115668699371. The next prime is 115668699511. The reversal of 115668699440 is 44996866511.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 115668699440.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103275065 + ... + 103276184.

It is an arithmetic number, because the mean of its divisors is an integer number (7683706500).

Almost surely, 2^115668699440 is an apocalyptic number.

115668699440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115668699440 is an abundant number, since it is smaller than the sum of its proper divisors (191679560560).

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

115668699440 is a wasteful number, since it uses less digits than its factorization.

115668699440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206551269 (or 206551263 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 59.

The spelling of 115668699440 in words is "one hundred fifteen billion, six hundred sixty-eight million, six hundred ninety-nine thousand, four hundred forty".