66667404340404 has 72 divisors (see below), whose sum is σ = 194361647800320. Its totient is φ = 18873079071552.

The previous prime is 66667404340399. The next prime is 66667404340417. The reversal of 66667404340404 is 40404340476666.

66667404340404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1213519284 + ... + 1213574219.

It is an arithmetic number, because the mean of its divisors is an integer number (2699467330560).

Almost surely, 2^{66667404340404} is an apocalyptic number.

It is an amenable number.

66667404340404 is an abundant number, since it is smaller than the sum of its proper divisors (127694243459916).

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

66667404340404 is a wasteful number, since it uses less digits than its factorization.

66667404340404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2427093629 (or 2427093624 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 54.

The spelling of 66667404340404 in words is "sixty-six trillion, six hundred sixty-seven billion, four hundred four million, three hundred forty thousand, four hundred four".