2596109561 has 4 divisors (see below), whose sum is σ = 2600317812. Its totient is φ = 2591901312.

The previous prime is 2596109543. The next prime is 2596109597. The reversal of 2596109561 is 1659016952.

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 1352841961 + 1243267600 = 36781^2 + 35260^2 .

It is a cyclic number.

It is not a de Polignac number, because 2596109561 - 2¹⁸ = 2595847417 is a prime.

It is a super-2 number, since 2×2596109561² = 13479569705431225442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2596103561) 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, 2103200 + ... + 2104433.

It is an arithmetic number, because the mean of its divisors is an integer number (650079453).

Almost surely, 2^2596109561 is an apocalyptic number.

It is an amenable number.

2596109561 is a deficient number, since it is larger than the sum of its proper divisors (4208251).

2596109561 is an equidigital number, since it uses as much as digits as its factorization.

2596109561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4208250.

The product of its (nonzero) digits is 145800, while the sum is 44.

The square root of 2596109561 is about 50952.0319614439. The cubic root of 2596109561 is about 1374.3826757893.

The spelling of 2596109561 in words is "two billion, five hundred ninety-six million, one hundred nine thousand, five hundred sixty-one".