66764064334 has 32 divisors (see below), whose sum is σ = 115694438400. Its totient is φ = 28557805440.

The previous prime is 66764064293. The next prime is 66764064343. The reversal of 66764064334 is 43346046766.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4083027 + ... + 4099345.

It is an arithmetic number, because the mean of its divisors is an integer number (3615451200).

Almost surely, 2^66764064334 is an apocalyptic number.

66764064334 is a deficient number, since it is larger than the sum of its proper divisors (48930374066).

66764064334 is a wasteful number, since it uses less digits than its factorization.

66764064334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27288.

The product of its (nonzero) digits is 5225472, while the sum is 49.

The spelling of 66764064334 in words is "sixty-six billion, seven hundred sixty-four million, sixty-four thousand, three hundred thirty-four".