66039342904 has 32 divisors (see below), whose sum is σ = 128293372800. Its totient is φ = 31835698560.

The previous prime is 66039342899. The next prime is 66039342931. The reversal of 66039342904 is 40924393066.

It is a super-2 number, since 2×66039342904² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 428247 + ... + 561670.

It is an arithmetic number, because the mean of its divisors is an integer number (4009167900).

Almost surely, 2^66039342904 is an apocalyptic number.

It is an amenable number.

66039342904 is a deficient number, since it is larger than the sum of its proper divisors (62254029896).

66039342904 is a wasteful number, since it uses less digits than its factorization.

66039342904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990223 (or 990219 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 46.

The spelling of 66039342904 in words is "sixty-six billion, thirty-nine million, three hundred forty-two thousand, nine hundred four".