66931306952 has 16 divisors (see below), whose sum is σ = 130952557440. Its totient is φ = 32010624976.

The previous prime is 66931306943. The next prime is 66931306961. The reversal of 66931306952 is 25960313966.

It is an interprime number because it is at equal distance from previous prime (66931306943) and next prime (66931306961).

It is a self number, because there is not a number n which added to its sum of digits gives 66931306952.

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, 181878368 + ... + 181878735.

It is an arithmetic number, because the mean of its divisors is an integer number (8184534840).

Almost surely, 2^66931306952 is an apocalyptic number.

It is an amenable number.

66931306952 is a deficient number, since it is larger than the sum of its proper divisors (64021250488).

66931306952 is a wasteful number, since it uses less digits than its factorization.

66931306952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363757132 (or 363757128 counting only the distinct ones).

The product of its (nonzero) digits is 1574640, while the sum is 50.

The spelling of 66931306952 in words is "sixty-six billion, nine hundred thirty-one million, three hundred six thousand, nine hundred fifty-two".