2655565615 has 4 divisors (see below), whose sum is σ = 3186678744. Its totient is φ = 2124452488.

The previous prime is 2655565559. The next prime is 2655565621. The reversal of 2655565615 is 5165655562.

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

It is a cyclic number.

It is not a de Polignac number, because 2655565615 - 2⁹ = 2655565103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265556557 + ... + 265556566.

It is an arithmetic number, because the mean of its divisors is an integer number (796669686).

Almost surely, 2^2655565615 is an apocalyptic number.

2655565615 is a deficient number, since it is larger than the sum of its proper divisors (531113129).

2655565615 is an equidigital number, since it uses as much as digits as its factorization.

2655565615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531113128.

The product of its digits is 1350000, while the sum is 46.

The square root of 2655565615 is about 51532.1803827472. The cubic root of 2655565615 is about 1384.7956125127.

The spelling of 2655565615 in words is "two billion, six hundred fifty-five million, five hundred sixty-five thousand, six hundred fifteen".