4264345785221 has 2 divisors, whose sum is σ = 4264345785222. Its totient is φ = 4264345785220.

The previous prime is 4264345785211. The next prime is 4264345785233. The reversal of 4264345785221 is 1225875434624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4233594304900 + 30751480321 = 2057570^2 + 175361^2 .

It is a cyclic number.

It is not a de Polignac number, because 4264345785221 - 2¹⁰ = 4264345784197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4264345785211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2132172892610 + 2132172892611.

It is an arithmetic number, because the mean of its divisors is an integer number (2132172892611).

Almost surely, 2^{4264345785221} is an apocalyptic number.

It is an amenable number.

4264345785221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4264345785221 is an equidigital number, since it uses as much as digits as its factorization.

4264345785221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12902400, while the sum is 53.

The spelling of 4264345785221 in words is "four trillion, two hundred sixty-four billion, three hundred forty-five million, seven hundred eighty-five thousand, two hundred twenty-one".