66600760734 has 20 divisors (see below), whose sum is σ = 149235038304. Its totient is φ = 22200253524.

The previous prime is 66600760717. The next prime is 66600760741. The reversal of 66600760734 is 43706700666.

It is a super-2 number, since 2×66600760734² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66600760734.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 205557742 + ... + 205558065.

Almost surely, 2^66600760734 is an apocalyptic number.

66600760734 is an abundant number, since it is smaller than the sum of its proper divisors (82634277570).

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

66600760734 is a wasteful number, since it uses less digits than its factorization.

66600760734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411115821 (or 411115812 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 45.

The spelling of 66600760734 in words is "sixty-six billion, six hundred million, seven hundred sixty thousand, seven hundred thirty-four".