66800674015 has 8 divisors (see below), whose sum is σ = 80164980720. Its totient is φ = 53437757952.

The previous prime is 66800674001. The next prime is 66800674027. The reversal of 66800674015 is 51047600866.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66800674015 - 2⁵ = 66800673983 is a prime.

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, 238885 + ... + 436654.

It is an arithmetic number, because the mean of its divisors is an integer number (10020622590).

Almost surely, 2^66800674015 is an apocalyptic number.

66800674015 is a deficient number, since it is larger than the sum of its proper divisors (13364306705).

66800674015 is a wasteful number, since it uses less digits than its factorization.

66800674015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695321.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 66800674015 in words is "sixty-six billion, eight hundred million, six hundred seventy-four thousand, fifteen".