115811178630 has 64 divisors (see below), whose sum is σ = 317749201920. Its totient is φ = 26463153024.

The previous prime is 115811178617. The next prime is 115811178643. The reversal of 115811178630 is 36871118511.

It is an interprime number because it is at equal distance from previous prime (115811178617) and next prime (115811178643).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 630327 + ... + 793053.

It is an arithmetic number, because the mean of its divisors is an integer number (4964831280).

Almost surely, 2^115811178630 is an apocalyptic number.

115811178630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

115811178630 is an abundant number, since it is smaller than the sum of its proper divisors (201938023290).

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

115811178630 is a wasteful number, since it uses less digits than its factorization.

115811178630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166133.

The product of its (nonzero) digits is 40320, while the sum is 42.

The spelling of 115811178630 in words is "one hundred fifteen billion, eight hundred eleven million, one hundred seventy-eight thousand, six hundred thirty".