6636534880320 has 448 divisors, whose sum is σ = 23649343242240. Its totient is φ = 1751881291776.

The previous prime is 6636534880309. The next prime is 6636534880333. The reversal of 6636534880320 is 230884356366.

6636534880320 is a `hidden beast` number, since 6 + 6 + 3 + 6 + 534 + 8 + 80 + 3 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 508034109 + ... + 508047171.

Almost surely, 2^{6636534880320} is an apocalyptic number.

6636534880320 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 6636534880320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11824671621120).

6636534880320 is an abundant number, since it is smaller than the sum of its proper divisors (17012808361920).

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

6636534880320 is a wasteful number, since it uses less digits than its factorization.

6636534880320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13679 (or 13663 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 54.

The spelling of 6636534880320 in words is "six trillion, six hundred thirty-six billion, five hundred thirty-four million, eight hundred eighty thousand, three hundred twenty".