115565612478 has 16 divisors (see below), whose sum is σ = 231148722816. Its totient is φ = 38518954520.

The previous prime is 115565612419. The next prime is 115565612489. The reversal of 115565612478 is 874216565511.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 115565612478.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 642426 + ... + 802397.

It is an arithmetic number, because the mean of its divisors is an integer number (14446795176).

Almost surely, 2^115565612478 is an apocalyptic number.

115565612478 is an abundant number, since it is smaller than the sum of its proper divisors (115583110338).

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

115565612478 is a wasteful number, since it uses less digits than its factorization.

115565612478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458159.

The product of its digits is 2016000, while the sum is 51.

The spelling of 115565612478 in words is "one hundred fifteen billion, five hundred sixty-five million, six hundred twelve thousand, four hundred seventy-eight".