66516848986 has 96 divisors (see below), whose sum is σ = 121315290624. Its totient is φ = 27243216000.

The previous prime is 66516848971. The next prime is 66516848987. The reversal of 66516848986 is 68984861566.

It is not an unprimeable number, because it can be changed into a prime (66516848987) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 157997056 + ... + 157997476.

It is an arithmetic number, because the mean of its divisors is an integer number (1263700944).

Almost surely, 2^66516848986 is an apocalyptic number.

66516848986 is a deficient number, since it is larger than the sum of its proper divisors (54798441638).

66516848986 is a wasteful number, since it uses less digits than its factorization.

66516848986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996 (or 989 counting only the distinct ones).

The product of its digits is 119439360, while the sum is 67.

The spelling of 66516848986 in words is "sixty-six billion, five hundred sixteen million, eight hundred forty-eight thousand, nine hundred eighty-six".