66666670004 has 24 divisors (see below), whose sum is σ = 130712540448. Its totient is φ = 29484030240.

The previous prime is 66666669983. The next prime is 66666670027. The reversal of 66666670004 is 40007666666.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 20473394 + ... + 20476649.

It is an arithmetic number, because the mean of its divisors is an integer number (5446355852).

Almost surely, 2^66666670004 is an apocalyptic number.

It is an amenable number.

66666670004 is a deficient number, since it is larger than the sum of its proper divisors (64045870444).

66666670004 is a wasteful number, since it uses less digits than its factorization.

66666670004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40950095 (or 40950093 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 47.

The spelling of 66666670004 in words is "sixty-six billion, six hundred sixty-six million, six hundred seventy thousand, four".