66313586880 has 84 divisors (see below), whose sum is σ = 228091118112. Its totient is φ = 17683622400.

The previous prime is 66313586849. The next prime is 66313586881. The reversal of 66313586880 is 8868531366.

It is not an unprimeable number, because it can be changed into a prime (66313586881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11509896 + ... + 11515655.

Almost surely, 2^66313586880 is an apocalyptic number.

66313586880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66313586880 is an abundant number, since it is smaller than the sum of its proper divisors (161777531232).

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

66313586880 is a wasteful number, since it uses less digits than its factorization.

66313586880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23025574 (or 23025561 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 66313586880 in words is "sixty-six billion, three hundred thirteen million, five hundred eighty-six thousand, eight hundred eighty".