66760737936 has 40 divisors (see below), whose sum is σ = 173418108864. Its totient is φ = 22130628480.

The previous prime is 66760737913. The next prime is 66760737937. The reversal of 66760737936 is 63973706766.

It is a super-2 number, since 2×66760737936² (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 66760737936.

It is not an unprimeable number, because it can be changed into a prime (66760737937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3833436 + ... + 3850811.

Almost surely, 2^66760737936 is an apocalyptic number.

It is an amenable number.

66760737936 is an abundant number, since it is smaller than the sum of its proper divisors (106657370928).

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

66760737936 is a wasteful number, since it uses less digits than its factorization.

66760737936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7684439 (or 7684433 counting only the distinct ones).

The product of its (nonzero) digits is 36006768, while the sum is 60.

The spelling of 66760737936 in words is "sixty-six billion, seven hundred sixty million, seven hundred thirty-seven thousand, nine hundred thirty-six".