66413965792 has 24 divisors (see below), whose sum is σ = 130758739776. Its totient is φ = 33205396992.

The previous prime is 66413965789. The next prime is 66413965817. The reversal of 66413965792 is 29756931466.

It is a congruent number.

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, 926968 + ... + 996040.

It is an arithmetic number, because the mean of its divisors is an integer number (5448280824).

Almost surely, 2^66413965792 is an apocalyptic number.

It is an amenable number.

66413965792 is a deficient number, since it is larger than the sum of its proper divisors (64344773984).

66413965792 is a wasteful number, since it uses less digits than its factorization.

66413965792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99130 (or 99122 counting only the distinct ones).

The product of its digits is 14696640, while the sum is 58.

The spelling of 66413965792 in words is "sixty-six billion, four hundred thirteen million, nine hundred sixty-five thousand, seven hundred ninety-two".