66330566264 has 32 divisors (see below), whose sum is σ = 124809297600. Its totient is φ = 33048259200.

The previous prime is 66330566243. The next prime is 66330566279. The reversal of 66330566264 is 46266503366.

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, 3289814 + ... + 3309914.

It is an arithmetic number, because the mean of its divisors is an integer number (3900290550).

Almost surely, 2^66330566264 is an apocalyptic number.

It is an amenable number.

66330566264 is a deficient number, since it is larger than the sum of its proper divisors (58478731336).

66330566264 is a wasteful number, since it uses less digits than its factorization.

66330566264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21543 (or 21539 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 47.

The spelling of 66330566264 in words is "sixty-six billion, three hundred thirty million, five hundred sixty-six thousand, two hundred sixty-four".