66976580072 has 16 divisors (see below), whose sum is σ = 125585728800. Its totient is φ = 33487052400.

The previous prime is 66976580053. The next prime is 66976580081. The reversal of 66976580072 is 27008567966.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99947 + ... + 379397.

It is an arithmetic number, because the mean of its divisors is an integer number (7849108050).

Almost surely, 2^66976580072 is an apocalyptic number.

It is an amenable number.

66976580072 is a deficient number, since it is larger than the sum of its proper divisors (58609148728).

66976580072 is a wasteful number, since it uses less digits than its factorization.

66976580072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309416 (or 309412 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 56.

The spelling of 66976580072 in words is "sixty-six billion, nine hundred seventy-six million, five hundred eighty thousand, seventy-two".