66795744759766 has 64 divisors (see below), whose sum is σ = 114273689587200. Its totient is φ = 28985806713600.

The previous prime is 66795744759763. The next prime is 66795744759773.

66795744759766 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66795744759761) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2059737240 + ... + 2059769668.

It is an arithmetic number, because the mean of its divisors is an integer number (1785526399800).

Almost surely, 2^{66795744759766} is an apocalyptic number.

66795744759766 is a deficient number, since it is larger than the sum of its proper divisors (47477944827434).

66795744759766 is a wasteful number, since it uses less digits than its factorization.

66795744759766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40165.

The product of its digits is 100818950400, while the sum is 88.

The spelling of 66795744759766 in words is "sixty-six trillion, seven hundred ninety-five billion, seven hundred forty-four million, seven hundred fifty-nine thousand, seven hundred sixty-six".