2655265561 has 16 divisors (see below), whose sum is σ = 3012811200. Its totient is φ = 2319859008.

The previous prime is 2655265519. The next prime is 2655265577. The reversal of 2655265561 is 1655625562.

It is a cyclic number.

It is not a de Polignac number, because 2655265561 - 2¹⁵ = 2655232793 is a prime.

It is a super-3 number, since 3×2655265561³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2655265511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 299190 + ... + 307936.

It is an arithmetic number, because the mean of its divisors is an integer number (188300700).

Almost surely, 2^2655265561 is an apocalyptic number.

It is an amenable number.

2655265561 is a deficient number, since it is larger than the sum of its proper divisors (357545639).

2655265561 is a wasteful number, since it uses less digits than its factorization.

2655265561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10008.

The product of its digits is 540000, while the sum is 43.

The square root of 2655265561 is about 51529.2689740501. The cubic root of 2655265561 is about 1384.7434542442.

The spelling of 2655265561 in words is "two billion, six hundred fifty-five million, two hundred sixty-five thousand, five hundred sixty-one".