66488659632 has 60 divisors (see below), whose sum is σ = 192078362944. Its totient is φ = 21447953280.

The previous prime is 66488659613. The next prime is 66488659639. The reversal of 66488659632 is 23695688466.

66488659632 is a `hidden beast` number, since 6 + 6 + 4 + 8 + 8 + 6 + 596 + 32 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 66488659632.

It is not an unprimeable number, because it can be changed into a prime (66488659639) 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 11 ways as a sum of consecutive naturals, for example, 7442743 + ... + 7451670.

Almost surely, 2^66488659632 is an apocalyptic number.

66488659632 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

66488659632 is an abundant number, since it is smaller than the sum of its proper divisors (125589703312).

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

66488659632 is a wasteful number, since it uses less digits than its factorization.

66488659632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14894458 (or 14894449 counting only the distinct ones).

The product of its digits is 89579520, while the sum is 63.

The spelling of 66488659632 in words is "sixty-six billion, four hundred eighty-eight million, six hundred fifty-nine thousand, six hundred thirty-two".