66040404373704 has 32 divisors (see below), whose sum is σ = 168940569330720. Its totient is φ = 21501527005056.

The previous prime is 66040404373681. The next prime is 66040404373759. The reversal of 66040404373704 is 40737340404066.

It is a super-2 number, since 2×66040404373704² (a number of 28 digits) contains 22 as substring.

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, 31996318917 + ... + 31996320980.

It is an arithmetic number, because the mean of its divisors is an integer number (5279392791585).

Almost surely, 2^{66040404373704} is an apocalyptic number.

It is an amenable number.

66040404373704 is an abundant number, since it is smaller than the sum of its proper divisors (102900164957016).

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

66040404373704 is a wasteful number, since it uses less digits than its factorization.

66040404373704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63992639949 (or 63992639945 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 48.

The spelling of 66040404373704 in words is "sixty-six trillion, forty billion, four hundred four million, three hundred seventy-three thousand, seven hundred four".