6421914147641 has 8 divisors (see below), whose sum is σ = 6457526607168. Its totient is φ = 6386303142000.

The previous prime is 6421914147629. The next prime is 6421914147653. The reversal of 6421914147641 is 1467414191246.

It is an interprime number because it is at equal distance from previous prime (6421914147629) and next prime (6421914147653).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6421914147641 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6421914147641.

It is not an unprimeable number, because it can be changed into a prime (6421914147611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9189146 + ... + 9863276.

It is an arithmetic number, because the mean of its divisors is an integer number (807190825896).

Almost surely, 2^{6421914147641} is an apocalyptic number.

It is an amenable number.

6421914147641 is a deficient number, since it is larger than the sum of its proper divisors (35612459527).

6421914147641 is a wasteful number, since it uses less digits than its factorization.

6421914147641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726943.

The product of its digits is 1161216, while the sum is 50.

The spelling of 6421914147641 in words is "six trillion, four hundred twenty-one billion, nine hundred fourteen million, one hundred forty-seven thousand, six hundred forty-one".