66868086796 has 24 divisors (see below), whose sum is σ = 134073062816. Its totient is φ = 28585560960.

The previous prime is 66868086787. The next prime is 66868086799. The reversal of 66868086796 is 69768086866.

It is not an unprimeable number, because it can be changed into a prime (66868086799) 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, 2996625 + ... + 3018856.

Almost surely, 2^66868086796 is an apocalyptic number.

It is an amenable number.

66868086796 is an abundant number, since it is smaller than the sum of its proper divisors (67204976020).

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

66868086796 is a wasteful number, since it uses less digits than its factorization.

66868086796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6015889 (or 6015887 counting only the distinct ones).

The product of its (nonzero) digits is 250822656, while the sum is 70.

Adding to 66868086796 its sum of digits (70), we get a palindrome (66868086866).

The spelling of 66868086796 in words is "sixty-six billion, eight hundred sixty-eight million, eighty-six thousand, seven hundred ninety-six".