66977066708 has 12 divisors (see below), whose sum is σ = 117211873632. Its totient is φ = 33487959960.

The previous prime is 66977066699. The next prime is 66977066743. The reversal of 66977066708 is 80766077966.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224153 + ... + 429183.

It is an arithmetic number, because the mean of its divisors is an integer number (9767656136).

Almost surely, 2^66977066708 is an apocalyptic number.

It is an amenable number.

66977066708 is a deficient number, since it is larger than the sum of its proper divisors (50234806924).

66977066708 is a wasteful number, since it uses less digits than its factorization.

66977066708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286702 (or 286700 counting only the distinct ones).

The product of its (nonzero) digits is 32006016, while the sum is 62.

The spelling of 66977066708 in words is "sixty-six billion, nine hundred seventy-seven million, sixty-six thousand, seven hundred eight".