66600060672 has 36 divisors (see below), whose sum is σ = 177253288520. Its totient is φ = 22200019968.

The previous prime is 66600060619. The next prime is 66600060691. The reversal of 66600060672 is 27606000666.

It is a self number, because there is not a number n which added to its sum of digits gives 66600060672.

It is a congruent number.

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, 43358647 + ... + 43360182.

Almost surely, 2^66600060672 is an apocalyptic number.

It is an amenable number.

66600060672 is an abundant number, since it is smaller than the sum of its proper divisors (110653227848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66600060672 is an equidigital number, since it uses as much as digits as its factorization.

66600060672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86718848 (or 86718834 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 39.

The spelling of 66600060672 in words is "sixty-six billion, six hundred million, sixty thousand, six hundred seventy-two".