66670404004 has 6 divisors (see below), whose sum is σ = 116673207014. Its totient is φ = 33335202000.

The previous prime is 66670403999. The next prime is 66670404029. The reversal of 66670404004 is 40040407666.

It can be written as a sum of positive squares in only one way, i.e., 65050502500 + 1619901504 = 255050^2 + 40248^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 8333800497 + ... + 8333800504.

Almost surely, 2^66670404004 is an apocalyptic number.

It is an amenable number.

66670404004 is a deficient number, since it is larger than the sum of its proper divisors (50002803010).

66670404004 is a wasteful number, since it uses less digits than its factorization.

66670404004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16667601005 (or 16667601003 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 37.

The spelling of 66670404004 in words is "sixty-six billion, six hundred seventy million, four hundred four thousand, four".