87800111818 has 16 divisors (see below), whose sum is σ = 137447649216. Its totient is φ = 41984822880.

The previous prime is 87800111809. The next prime is 87800111857. The reversal of 87800111818 is 81811100878.

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 7 ways as a sum of consecutive naturals, for example, 157030 + ... + 447502.

It is an arithmetic number, because the mean of its divisors is an integer number (8590478076).

Almost surely, 2^87800111818 is an apocalyptic number.

87800111818 is a deficient number, since it is larger than the sum of its proper divisors (49647537398).

87800111818 is a wasteful number, since it uses less digits than its factorization.

87800111818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297069.

The product of its (nonzero) digits is 28672, while the sum is 43.

The spelling of 87800111818 in words is "eighty-seven billion, eight hundred million, one hundred eleven thousand, eight hundred eighteen".