115863313511 has 16 divisors (see below), whose sum is σ = 127582033920. Its totient is φ = 104342605920.

The previous prime is 115863313507. The next prime is 115863313513. The reversal of 115863313511 is 115313368511.

It is a cyclic number.

It is not a de Polignac number, because 115863313511 - 2² = 115863313507 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115863313513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10621286 + ... + 10632188.

It is an arithmetic number, because the mean of its divisors is an integer number (7973877120).

Almost surely, 2^115863313511 is an apocalyptic number.

115863313511 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

115863313511 is a deficient number, since it is larger than the sum of its proper divisors (11718720409).

115863313511 is a wasteful number, since it uses less digits than its factorization.

115863313511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19886.

The product of its digits is 32400, while the sum is 38.

The spelling of 115863313511 in words is "one hundred fifteen billion, eight hundred sixty-three million, three hundred thirteen thousand, five hundred eleven".