2564641535 has 16 divisors (see below), whose sum is σ = 3188203200. Its totient is φ = 1978158336.

The previous prime is 2564641529. The next prime is 2564641571. The reversal of 2564641535 is 5351464652.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2564641535 - 2⁸ = 2564641279 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2564641492 and 2564641501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93251 + ... + 117579.

It is an arithmetic number, because the mean of its divisors is an integer number (199262700).

Almost surely, 2^2564641535 is an apocalyptic number.

2564641535 is a deficient number, since it is larger than the sum of its proper divisors (623561665).

2564641535 is a wasteful number, since it uses less digits than its factorization.

2564641535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25090.

The product of its digits is 432000, while the sum is 41.

The square root of 2564641535 is about 50642.2899857422. The cubic root of 2564641535 is about 1368.8070199691.

The spelling of 2564641535 in words is "two billion, five hundred sixty-four million, six hundred forty-one thousand, five hundred thirty-five".