66890979048 has 32 divisors (see below), whose sum is σ = 167234751360. Its totient is φ = 22296019200.

The previous prime is 66890979019. The next prime is 66890979061. The reversal of 66890979048 is 84097909866.

66890979048 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 66890979048.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 688273 + ... + 779423.

It is an arithmetic number, because the mean of its divisors is an integer number (5226085980).

Almost surely, 2^66890979048 is an apocalyptic number.

It is an amenable number.

66890979048 is an abundant number, since it is smaller than the sum of its proper divisors (100343772312).

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

66890979048 is a wasteful number, since it uses less digits than its factorization.

66890979048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121737 (or 121733 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 66.

The spelling of 66890979048 in words is "sixty-six billion, eight hundred ninety million, nine hundred seventy-nine thousand, forty-eight".