66980751576 has 32 divisors (see below), whose sum is σ = 167514452160. Its totient is φ = 22318574112.

The previous prime is 66980751529. The next prime is 66980751589. The reversal of 66980751576 is 67515708966.

66980751576 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 455710 + ... + 584493.

It is an arithmetic number, because the mean of its divisors is an integer number (5234826630).

Almost surely, 2^66980751576 is an apocalyptic number.

It is an amenable number.

66980751576 is an abundant number, since it is smaller than the sum of its proper divisors (100533700584).

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

66980751576 is a wasteful number, since it uses less digits than its factorization.

66980751576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042895 (or 1042891 counting only the distinct ones).

The product of its (nonzero) digits is 19051200, while the sum is 60.

The spelling of 66980751576 in words is "sixty-six billion, nine hundred eighty million, seven hundred fifty-one thousand, five hundred seventy-six".