2566065261 has 16 divisors (see below), whose sum is σ = 3540772800. Its totient is φ = 1651079808.

The previous prime is 2566065241. The next prime is 2566065263. The reversal of 2566065261 is 1625606652.

It is a happy number.

2566065261 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 2566065261 - 2⁹ = 2566064749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2566065263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 338070 + ... + 345576.

It is an arithmetic number, because the mean of its divisors is an integer number (221298300).

Almost surely, 2^2566065261 is an apocalyptic number.

It is an amenable number.

2566065261 is a deficient number, since it is larger than the sum of its proper divisors (974707539).

2566065261 is a wasteful number, since it uses less digits than its factorization.

2566065261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11468.

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 2566065261 is about 50656.3447260064. The cubic root of 2566065261 is about 1369.0602646702.

The spelling of 2566065261 in words is "two billion, five hundred sixty-six million, sixty-five thousand, two hundred sixty-one".