2566101493 has 2 divisors, whose sum is σ = 2566101494. Its totient is φ = 2566101492.

The previous prime is 2566101469. The next prime is 2566101509. The reversal of 2566101493 is 3941016652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2483327889 + 82773604 = 49833^2 + 9098^2 .

It is a cyclic number.

It is not a de Polignac number, because 2566101493 - 2²¹ = 2564004341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2566101413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1283050746 + 1283050747.

It is an arithmetic number, because the mean of its divisors is an integer number (1283050747).

Almost surely, 2^2566101493 is an apocalyptic number.

It is an amenable number.

2566101493 is a deficient number, since it is larger than the sum of its proper divisors (1).

2566101493 is an equidigital number, since it uses as much as digits as its factorization.

2566101493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 2566101493 is about 50656.7023502320. The cubic root of 2566101493 is about 1369.0667082006.

The spelling of 2566101493 in words is "two billion, five hundred sixty-six million, one hundred one thousand, four hundred ninety-three".