6432371638321 has 16 divisors (see below), whose sum is σ = 6621755189760. Its totient is φ = 6246468748800.

The previous prime is 6432371638309. The next prime is 6432371638333. The reversal of 6432371638321 is 1238361732346.

It is an interprime number because it is at equal distance from previous prime (6432371638309) and next prime (6432371638333).

It is a cyclic number.

It is not a de Polignac number, because 6432371638321 - 2²⁷ = 6432237420593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6432371638421) 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 15 ways as a sum of consecutive naturals, for example, 1336441 + ... + 3827638.

It is an arithmetic number, because the mean of its divisors is an integer number (413859699360).

Almost surely, 2^{6432371638321} is an apocalyptic number.

It is an amenable number.

6432371638321 is a deficient number, since it is larger than the sum of its proper divisors (189383551439).

6432371638321 is a wasteful number, since it uses less digits than its factorization.

6432371638321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5164416.

The product of its digits is 2612736, while the sum is 49.

The spelling of 6432371638321 in words is "six trillion, four hundred thirty-two billion, three hundred seventy-one million, six hundred thirty-eight thousand, three hundred twenty-one".