2566356341 has 4 divisors (see below), whose sum is σ = 2566457772. Its totient is φ = 2566254912.

The previous prime is 2566356323. The next prime is 2566356347. The reversal of 2566356341 is 1436536652.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2096724100 + 469632241 = 45790^2 + 21671^2 .

It is a cyclic number.

It is not a de Polignac number, because 2566356341 - 2¹⁴ = 2566339957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2566356347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21791 + ... + 74883.

It is an arithmetic number, because the mean of its divisors is an integer number (641614443).

Almost surely, 2^2566356341 is an apocalyptic number.

It is an amenable number.

2566356341 is a deficient number, since it is larger than the sum of its proper divisors (101431).

2566356341 is an equidigital number, since it uses as much as digits as its factorization.

2566356341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101430.

The product of its digits is 388800, while the sum is 41.

The square root of 2566356341 is about 50659.2177298466. The cubic root of 2566356341 is about 1369.1120288765.

The spelling of 2566356341 in words is "two billion, five hundred sixty-six million, three hundred fifty-six thousand, three hundred forty-one".