66862302512 has 40 divisors (see below), whose sum is σ = 129993242400. Its totient is φ = 33315789312.

The previous prime is 66862302371. The next prime is 66862302553. The reversal of 66862302512 is 21520326866.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 66862302512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11651708 + ... + 11657444.

It is an arithmetic number, because the mean of its divisors is an integer number (3249831060).

Almost surely, 2^66862302512 is an apocalyptic number.

It is an amenable number.

66862302512 is a deficient number, since it is larger than the sum of its proper divisors (63130939888).

66862302512 is a wasteful number, since it uses less digits than its factorization.

66862302512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8133 (or 8127 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 66862302512 in words is "sixty-six billion, eight hundred sixty-two million, three hundred two thousand, five hundred twelve".