2566372321 has 2 divisors, whose sum is σ = 2566372322. Its totient is φ = 2566372320.

The previous prime is 2566372301. The next prime is 2566372337. The reversal of 2566372321 is 1232736652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2483925921 + 82446400 = 49839^2 + 9080^2 .

It is a cyclic number.

It is not a de Polignac number, because 2566372321 - 2¹¹ = 2566370273 is a prime.

It is not a weakly prime, because it can be changed into another prime (2566372301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1283186160 + 1283186161.

It is an arithmetic number, because the mean of its divisors is an integer number (1283186161).

Almost surely, 2^2566372321 is an apocalyptic number.

It is an amenable number.

2566372321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2566372321 is an equidigital number, since it uses as much as digits as its factorization.

2566372321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 37.

The square root of 2566372321 is about 50659.3754501573. The cubic root of 2566372321 is about 1369.1148705662.

The spelling of 2566372321 in words is "two billion, five hundred sixty-six million, three hundred seventy-two thousand, three hundred twenty-one".