6421357673732 has 12 divisors (see below), whose sum is σ = 11476469034240. Its totient is φ = 3142366521096.

The previous prime is 6421357673713. The next prime is 6421357673737. The reversal of 6421357673732 is 2373767531246.

It is not an unprimeable number, because it can be changed into a prime (6421357673737) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 17078078732 + ... + 17078079107.

It is an arithmetic number, because the mean of its divisors is an integer number (956372419520).

Almost surely, 2^{6421357673732} is an apocalyptic number.

It is an amenable number.

6421357673732 is a deficient number, since it is larger than the sum of its proper divisors (5055111360508).

6421357673732 is a wasteful number, since it uses less digits than its factorization.

6421357673732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34156157890 (or 34156157888 counting only the distinct ones).

The product of its digits is 26671680, while the sum is 56.

The spelling of 6421357673732 in words is "six trillion, four hundred twenty-one billion, three hundred fifty-seven million, six hundred seventy-three thousand, seven hundred thirty-two".