66480008064 has 32 divisors (see below), whose sum is σ = 176587522440. Its totient is φ = 22160002560.

The previous prime is 66480008039. The next prime is 66480008071. The reversal of 66480008064 is 46080008466.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86562127 + ... + 86562894.

Almost surely, 2^66480008064 is an apocalyptic number.

66480008064 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

66480008064 is an abundant number, since it is smaller than the sum of its proper divisors (110107514376).

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

66480008064 is a wasteful number, since it uses less digits than its factorization.

66480008064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173125038 (or 173125026 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The spelling of 66480008064 in words is "sixty-six billion, four hundred eighty million, eight thousand, sixty-four".