66910018864396 has 12 divisors (see below), whose sum is σ = 117154849435120. Its totient is φ = 33437204740080.

The previous prime is 66910018864391. The next prime is 66910018864483. The reversal of 66910018864396 is 69346881001966.

It is a hoax number, since the sum of its digits (67) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (66910018864391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4451164575 + ... + 4451179606.

Almost surely, 2^{66910018864396} is an apocalyptic number.

It is an amenable number.

66910018864396 is a deficient number, since it is larger than the sum of its proper divisors (50244830570724).

66910018864396 is a wasteful number, since it uses less digits than its factorization.

66910018864396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8902346064 (or 8902346062 counting only the distinct ones).

The product of its (nonzero) digits is 80621568, while the sum is 67.

The spelling of 66910018864396 in words is "sixty-six trillion, nine hundred ten billion, eighteen million, eight hundred sixty-four thousand, three hundred ninety-six".