66759273746688 has 72 divisors (see below), whose sum is σ = 177683785154848. Its totient is φ = 22252244631552.

The previous prime is 66759273746651. The next prime is 66759273746707. The reversal of 66759273746688 is 88664737295766.

It is a self number, because there is not a number n which added to its sum of digits gives 66759273746688.

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, 18709395 + ... + 21989997.

Almost surely, 2^{66759273746688} is an apocalyptic number.

It is an amenable number.

66759273746688 is an abundant number, since it is smaller than the sum of its proper divisors (110924511408160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66759273746688 is a wasteful number, since it uses less digits than its factorization.

66759273746688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3307119 (or 3307105 counting only the distinct ones).

The product of its digits is 30725775360, while the sum is 84.

The spelling of 66759273746688 in words is "sixty-six trillion, seven hundred fifty-nine billion, two hundred seventy-three million, seven hundred forty-six thousand, six hundred eighty-eight".