66667403404 has 24 divisors (see below), whose sum is σ = 133359581600. Its totient is φ = 28566435456.

The previous prime is 66667403399. The next prime is 66667403441. The reversal of 66667403404 is 40430476666.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65907 + ... + 371050.

Almost surely, 2^66667403404 is an apocalyptic number.

It is an amenable number.

66667403404 is an abundant number, since it is smaller than the sum of its proper divisors (66692178196).

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

66667403404 is a wasteful number, since it uses less digits than its factorization.

66667403404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442417 (or 442415 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 46.

The spelling of 66667403404 in words is "sixty-six billion, six hundred sixty-seven million, four hundred three thousand, four hundred four".