6463954323421 has 8 divisors (see below), whose sum is σ = 7387406861504. Its totient is φ = 5540509408320.

The previous prime is 6463954323349. The next prime is 6463954323469. The reversal of 6463954323421 is 1243234593646.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 6463954323421 - 2²⁵ = 6463920768989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6463954323121) 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, 44341 + ... + 3595813.

It is an arithmetic number, because the mean of its divisors is an integer number (923425857688).

Almost surely, 2^{6463954323421} is an apocalyptic number.

It is an amenable number.

6463954323421 is a deficient number, since it is larger than the sum of its proper divisors (923452538083).

6463954323421 is a wasteful number, since it uses less digits than its factorization.

6463954323421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3811491.

The product of its digits is 11197440, while the sum is 52.

The spelling of 6463954323421 in words is "six trillion, four hundred sixty-three billion, nine hundred fifty-four million, three hundred twenty-three thousand, four hundred twenty-one".