66956970952 has 16 divisors (see below), whose sum is σ = 125551267200. Its totient is φ = 33476633040.

The previous prime is 66956970929. The next prime is 66956970989. The reversal of 66956970952 is 25907965966.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71424 + ... + 372847.

It is an arithmetic number, because the mean of its divisors is an integer number (7846954200).

Almost surely, 2^66956970952 is an apocalyptic number.

It is an amenable number.

66956970952 is a deficient number, since it is larger than the sum of its proper divisors (58594296248).

66956970952 is a wasteful number, since it uses less digits than its factorization.

66956970952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463116 (or 463112 counting only the distinct ones).

The product of its (nonzero) digits is 55112400, while the sum is 64.

The spelling of 66956970952 in words is "sixty-six billion, nine hundred fifty-six million, nine hundred seventy thousand, nine hundred fifty-two".