66777373701 has 24 divisors (see below), whose sum is σ = 101059917504. Its totient is φ = 44059282560.

The previous prime is 66777373681. The next prime is 66777373703. The reversal of 66777373701 is 10737377766.

It is not a de Polignac number, because 66777373701 - 2²³ = 66768985093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66777373703) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1392945 + ... + 1440086.

It is an arithmetic number, because the mean of its divisors is an integer number (4210829896).

Almost surely, 2^66777373701 is an apocalyptic number.

It is an amenable number.

66777373701 is a deficient number, since it is larger than the sum of its proper divisors (34282543803).

66777373701 is an equidigital number, since it uses as much as digits as its factorization.

66777373701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2833143 (or 2833131 counting only the distinct ones).

The product of its (nonzero) digits is 5445468, while the sum is 54.

The spelling of 66777373701 in words is "sixty-six billion, seven hundred seventy-seven million, three hundred seventy-three thousand, seven hundred one".