8113856555 has 32 divisors (see below), whose sum is σ = 11340810240. Its totient is φ = 5458078080.

The previous prime is 8113856551. The next prime is 8113856557. The reversal of 8113856555 is 5556583118.

It is not a de Polignac number, because 8113856555 - 2² = 8113856551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8113856551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 424760 + ... + 443450.

It is an arithmetic number, because the mean of its divisors is an integer number (354400320).

Almost surely, 2^8113856555 is an apocalyptic number.

8113856555 is a deficient number, since it is larger than the sum of its proper divisors (3226953685).

8113856555 is a wasteful number, since it uses less digits than its factorization.

8113856555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18939.

The product of its digits is 720000, while the sum is 47.

The square root of 8113856555 is about 90076.9479667245. The cubic root of 8113856555 is about 2009.4433872901.

The spelling of 8113856555 in words is "eight billion, one hundred thirteen million, eight hundred fifty-six thousand, five hundred fifty-five".