66625334808 has 16 divisors (see below), whose sum is σ = 166563337080. Its totient is φ = 22208444928.

The previous prime is 66625334807. The next prime is 66625334821. The reversal of 66625334808 is 80843352666.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66625334807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1388027785 + ... + 1388027832.

Almost surely, 2^66625334808 is an apocalyptic number.

It is an amenable number.

66625334808 is an abundant number, since it is smaller than the sum of its proper divisors (99938002272).

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

66625334808 is a wasteful number, since it uses less digits than its factorization.

66625334808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2776055626 (or 2776055622 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 51.

The spelling of 66625334808 in words is "sixty-six billion, six hundred twenty-five million, three hundred thirty-four thousand, eight hundred eight".