6321264402464 has 24 divisors (see below), whose sum is σ = 13576351956048. Its totient is φ = 2873302000960.

The previous prime is 6321264402437. The next prime is 6321264402533. The reversal of 6321264402464 is 4642044621236.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8979068402 + ... + 8979069105.

It is an arithmetic number, because the mean of its divisors is an integer number (565681331502).

Almost surely, 2^{6321264402464} is an apocalyptic number.

It is an amenable number.

6321264402464 is an abundant number, since it is smaller than the sum of its proper divisors (7255087553584).

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

6321264402464 is a wasteful number, since it uses less digits than its factorization.

6321264402464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17958137528 (or 17958137520 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 44.

The spelling of 6321264402464 in words is "six trillion, three hundred twenty-one billion, two hundred sixty-four million, four hundred two thousand, four hundred sixty-four".