6364437625221 has 16 divisors (see below), whose sum is σ = 9361574295360. Its totient is φ = 3821050730880.

The previous prime is 6364437625219. The next prime is 6364437625261. The reversal of 6364437625221 is 1225267344636.

6364437625221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6364437625221 - 2¹ = 6364437625219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6364437625261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1990128991 + ... + 1990132188.

It is an arithmetic number, because the mean of its divisors is an integer number (585098393460).

Almost surely, 2^{6364437625221} is an apocalyptic number.

It is an amenable number.

6364437625221 is a deficient number, since it is larger than the sum of its proper divisors (2997136670139).

6364437625221 is a wasteful number, since it uses less digits than its factorization.

6364437625221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3980261236.

The product of its digits is 8709120, while the sum is 51.

The spelling of 6364437625221 in words is "six trillion, three hundred sixty-four billion, four hundred thirty-seven million, six hundred twenty-five thousand, two hundred twenty-one".