2536345561 has 4 divisors (see below), whose sum is σ = 2551006692. Its totient is φ = 2521684432.

The previous prime is 2536345531. The next prime is 2536345577. The reversal of 2536345561 is 1655436352.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1343955600 + 1192389961 = 36660^2 + 34531^2 .

It is a cyclic number.

It is not a de Polignac number, because 2536345561 - 2⁷ = 2536345433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2536345531) 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 in 3 ways as a sum of consecutive naturals, for example, 7330306 + ... + 7330651.

It is an arithmetic number, because the mean of its divisors is an integer number (637751673).

Almost surely, 2^2536345561 is an apocalyptic number.

It is an amenable number.

2536345561 is a deficient number, since it is larger than the sum of its proper divisors (14661131).

2536345561 is a wasteful number, since it uses less digits than its factorization.

2536345561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14661130.

The product of its digits is 324000, while the sum is 40.

The square root of 2536345561 is about 50362.1441263177. The cubic root of 2536345561 is about 1363.7543253767.

The spelling of 2536345561 in words is "two billion, five hundred thirty-six million, three hundred forty-five thousand, five hundred sixty-one".