66368174436 has 36 divisors (see below), whose sum is σ = 168516321792. Its totient is φ = 22023517104.

The previous prime is 66368174419. The next prime is 66368174503. The reversal of 66368174436 is 63447186366.

66368174436 is a `hidden beast` number, since 6 + 6 + 36 + 8 + 174 + 436 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4125516 + ... + 4141571.

Almost surely, 2^66368174436 is an apocalyptic number.

It is an amenable number.

66368174436 is an abundant number, since it is smaller than the sum of its proper divisors (102148147356).

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

66368174436 is a wasteful number, since it uses less digits than its factorization.

66368174436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8267320 (or 8267315 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 54.

The spelling of 66368174436 in words is "sixty-six billion, three hundred sixty-eight million, one hundred seventy-four thousand, four hundred thirty-six".