66757210976 has 24 divisors (see below), whose sum is σ = 132656567400. Its totient is φ = 33066654208.

The previous prime is 66757210969. The next prime is 66757210979. The reversal of 66757210976 is 67901275766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66757210979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9745001 + ... + 9751848.

It is an arithmetic number, because the mean of its divisors is an integer number (5527356975).

Almost surely, 2^66757210976 is an apocalyptic number.

It is an amenable number.

66757210976 is a deficient number, since it is larger than the sum of its proper divisors (65899356424).

66757210976 is a wasteful number, since it uses less digits than its factorization.

66757210976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19496966 (or 19496958 counting only the distinct ones).

The product of its (nonzero) digits is 6667920, while the sum is 56.

The spelling of 66757210976 in words is "sixty-six billion, seven hundred fifty-seven million, two hundred ten thousand, nine hundred seventy-six".