18200077864 has 16 divisors (see below), whose sum is σ = 34703539200. Its totient is φ = 8945800752.

The previous prime is 18200077849. The next prime is 18200077937. The reversal of 18200077864 is 46877000281.

It is a self number, because there is not a number n which added to its sum of digits gives 18200077864.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19279272 + ... + 19280215.

It is an arithmetic number, because the mean of its divisors is an integer number (2168971200).

Almost surely, 2^18200077864 is an apocalyptic number.

It is an amenable number.

18200077864 is a deficient number, since it is larger than the sum of its proper divisors (16503461336).

18200077864 is a wasteful number, since it uses less digits than its factorization.

18200077864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38559552 (or 38559548 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 43.

The spelling of 18200077864 in words is "eighteen billion, two hundred million, seventy-seven thousand, eight hundred sixty-four".