66624964429320 has 256 divisors, whose sum is σ = 243815742316800. Its totient is φ = 16048630241280.

The previous prime is 66624964429319. The next prime is 66624964429327. The reversal of 66624964429320 is 2392446942666.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (66624964429327) 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 63 ways as a sum of consecutive naturals, for example, 15995229 + ... + 19725548.

It is an arithmetic number, because the mean of its divisors is an integer number (952405243425).

Almost surely, 2^{66624964429320} is an apocalyptic number.

66624964429320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66624964429320 is an abundant number, since it is smaller than the sum of its proper divisors (177190777887480).

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

66624964429320 is a wasteful number, since it uses less digits than its factorization.

66624964429320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35720965 (or 35720955 counting only the distinct ones).

The product of its (nonzero) digits is 161243136, while the sum is 63.

The spelling of 66624964429320 in words is "sixty-six trillion, six hundred twenty-four billion, nine hundred sixty-four million, four hundred twenty-nine thousand, three hundred twenty".