66666667344 has 40 divisors (see below), whose sum is σ = 175471706592. Its totient is φ = 21802934400.

The previous prime is 66666667337. The next prime is 66666667369. The reversal of 66666667344 is 44376666666.

It is a congruent number.

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, 13100182 + ... + 13105269.

Almost surely, 2^66666667344 is an apocalyptic number.

It is an amenable number.

66666667344 is an abundant number, since it is smaller than the sum of its proper divisors (108805039248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66666667344 is a wasteful number, since it uses less digits than its factorization.

66666667344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26205515 (or 26205509 counting only the distinct ones).

The product of its digits is 94058496, while the sum is 60.

The spelling of 66666667344 in words is "sixty-six billion, six hundred sixty-six million, six hundred sixty-seven thousand, three hundred forty-four".