66204409286 has 32 divisors (see below), whose sum is σ = 108287155200. Its totient is φ = 30240980640.

The previous prime is 66204409273. The next prime is 66204409321. The reversal of 66204409286 is 68290440266.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 66204409286.

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, 234080 + ... + 432668.

It is an arithmetic number, because the mean of its divisors is an integer number (3383973600).

Almost surely, 2^66204409286 is an apocalyptic number.

66204409286 is a deficient number, since it is larger than the sum of its proper divisors (42082745914).

66204409286 is a wasteful number, since it uses less digits than its factorization.

66204409286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198924.

The product of its (nonzero) digits is 995328, while the sum is 47.

The spelling of 66204409286 in words is "sixty-six billion, two hundred four million, four hundred nine thousand, two hundred eighty-six".