2566531413 has 40 divisors (see below), whose sum is σ = 3965040288. Its totient is φ = 1653496416.

The previous prime is 2566531393. The next prime is 2566531417. The reversal of 2566531413 is 3141356652.

2566531413 is a `hidden beast` number, since 2 + 566 + 53 + 1 + 41 + 3 = 666.

2566531413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2566531413 - 2¹⁰ = 2566530389 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2566531417) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 283170 + ... + 292092.

Almost surely, 2^2566531413 is an apocalyptic number.

It is an amenable number.

2566531413 is a deficient number, since it is larger than the sum of its proper divisors (1398508875).

2566531413 is an equidigital number, since it uses as much as digits as its factorization.

2566531413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9055 (or 9046 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 2566531413 is about 50660.9456386278. The cubic root of 2566531413 is about 1369.1431609173.

The spelling of 2566531413 in words is "two billion, five hundred sixty-six million, five hundred thirty-one thousand, four hundred thirteen".