66376700879 has 4 divisors (see below), whose sum is σ = 66550008576. Its totient is φ = 66203393184.

The previous prime is 66376700783. The next prime is 66376700917. The reversal of 66376700879 is 97800767366.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66376700879 - 2³² = 62081733583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66376700479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86653274 + ... + 86654039.

It is an arithmetic number, because the mean of its divisors is an integer number (16637502144).

Almost surely, 2^66376700879 is an apocalyptic number.

66376700879 is a deficient number, since it is larger than the sum of its proper divisors (173307697).

66376700879 is a wasteful number, since it uses less digits than its factorization.

66376700879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173307696.

The product of its (nonzero) digits is 16003008, while the sum is 59.

The spelling of 66376700879 in words is "sixty-six billion, three hundred seventy-six million, seven hundred thousand, eight hundred seventy-nine".