115978860440 has 16 divisors (see below), whose sum is σ = 260952436080. Its totient is φ = 46391544160.

The previous prime is 115978860433. The next prime is 115978860457. The reversal of 115978860440 is 44068879511.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1449735716 + ... + 1449735795.

It is an arithmetic number, because the mean of its divisors is an integer number (16309527255).

Almost surely, 2^115978860440 is an apocalyptic number.

115978860440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115978860440 is an abundant number, since it is smaller than the sum of its proper divisors (144973575640).

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

115978860440 is a wasteful number, since it uses less digits than its factorization.

115978860440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2899471522 (or 2899471518 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 53.

The spelling of 115978860440 in words is "one hundred fifteen billion, nine hundred seventy-eight million, eight hundred sixty thousand, four hundred forty".