6642062644400 has 60 divisors (see below), whose sum is σ = 15958041589464. Its totient is φ = 2656744128000.

The previous prime is 6642062644397. The next prime is 6642062644403. The reversal of 6642062644400 is 44462602466.

It is an interprime number because it is at equal distance from previous prime (6642062644397) and next prime (6642062644403).

It is not an unprimeable number, because it can be changed into a prime (6642062644403) 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, 13881140 + ... + 14351660.

Almost surely, 2^{6642062644400} is an apocalyptic number.

It is an amenable number.

6642062644400 is an abundant number, since it is smaller than the sum of its proper divisors (9315978945064).

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

6642062644400 is a wasteful number, since it uses less digits than its factorization.

6642062644400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505830 (or 505819 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 44.

The spelling of 6642062644400 in words is "six trillion, six hundred forty-two billion, sixty-two million, six hundred forty-four thousand, four hundred".