66632616852480 has 1056 divisors, whose sum is σ = 279574831929600. Its totient is φ = 15002892140544.

The previous prime is 66632616852469. The next prime is 66632616852491. The reversal of 66632616852480 is 8425861623666.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (66632616852469) and next prime (66632616852491).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 453768511 + ... + 453915329.

Almost surely, 2^{66632616852480} is an apocalyptic number.

66632616852480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66632616852480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139787415964800).

66632616852480 is an abundant number, since it is smaller than the sum of its proper divisors (212942215077120).

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

66632616852480 is a wasteful number, since it uses less digits than its factorization.

66632616852480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146934 (or 146903 counting only the distinct ones).

The product of its (nonzero) digits is 119439360, while the sum is 63.

The spelling of 66632616852480 in words is "sixty-six trillion, six hundred thirty-two billion, six hundred sixteen million, eight hundred fifty-two thousand, four hundred eighty".