2661255341 has 4 divisors (see below), whose sum is σ = 2665210332. Its totient is φ = 2657300352.

The previous prime is 2661255329. The next prime is 2661255353. The reversal of 2661255341 is 1435521662.

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

It is an interprime number because it is at equal distance from previous prime (2661255329) and next prime (2661255353).

It can be written as a sum of positive squares in 2 ways, for example, as 1175461225 + 1485794116 = 34285^2 + 38546^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2661255341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661255391) 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, 1976486 + ... + 1977831.

It is an arithmetic number, because the mean of its divisors is an integer number (666302583).

Almost surely, 2^2661255341 is an apocalyptic number.

It is an amenable number.

2661255341 is a deficient number, since it is larger than the sum of its proper divisors (3954991).

2661255341 is an equidigital number, since it uses as much as digits as its factorization.

2661255341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3954990.

The product of its digits is 43200, while the sum is 35.

The square root of 2661255341 is about 51587.3564063909. The cubic root of 2661255341 is about 1385.7839125914.

The spelling of 2661255341 in words is "two billion, six hundred sixty-one million, two hundred fifty-five thousand, three hundred forty-one".