66200090902 has 32 divisors (see below), whose sum is σ = 111283626240. Its totient is φ = 29270198880.

The previous prime is 66200090897. The next prime is 66200090911. The reversal of 66200090902 is 20909000266.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4246999 + ... + 4262557.

It is an arithmetic number, because the mean of its divisors is an integer number (3477613320).

Almost surely, 2^66200090902 is an apocalyptic number.

66200090902 is a deficient number, since it is larger than the sum of its proper divisors (45083535338).

66200090902 is a wasteful number, since it uses less digits than its factorization.

66200090902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20836.

The product of its (nonzero) digits is 11664, while the sum is 34.

The spelling of 66200090902 in words is "sixty-six billion, two hundred million, ninety thousand, nine hundred two".