6321720271242 has 64 divisors (see below), whose sum is σ = 12993216039936. Its totient is φ = 2049377742720.

The previous prime is 6321720271193. The next prime is 6321720271261. The reversal of 6321720271242 is 2421720271236.

It is a self number, because there is not a number n which added to its sum of digits gives 6321720271242.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96418723 + ... + 96484265.

It is an arithmetic number, because the mean of its divisors is an integer number (203019000624).

Almost surely, 2^{6321720271242} is an apocalyptic number.

6321720271242 is an abundant number, since it is smaller than the sum of its proper divisors (6671495768694).

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

6321720271242 is a wasteful number, since it uses less digits than its factorization.

6321720271242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67195.

The product of its (nonzero) digits is 112896, while the sum is 39.

The spelling of 6321720271242 in words is "six trillion, three hundred twenty-one billion, seven hundred twenty million, two hundred seventy-one thousand, two hundred forty-two".