66331928374 has 16 divisors (see below), whose sum is σ = 100626291360. Its totient is φ = 32789908800.

The previous prime is 66331928357. The next prime is 66331928387. The reversal of 66331928374 is 47382913366.

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, 3217399 + ... + 3237949.

It is an arithmetic number, because the mean of its divisors is an integer number (6289143210).

Almost surely, 2^66331928374 is an apocalyptic number.

66331928374 is a deficient number, since it is larger than the sum of its proper divisors (34294362986).

66331928374 is a wasteful number, since it uses less digits than its factorization.

66331928374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38775.

The product of its digits is 3919104, while the sum is 52.

The spelling of 66331928374 in words is "sixty-six billion, three hundred thirty-one million, nine hundred twenty-eight thousand, three hundred seventy-four".