2655636439 has 2 divisors, whose sum is σ = 2655636440.
Its totient is φ = 2655636438.
The previous prime is 2655636427. The next prime is 2655636449. The reversal of 2655636439 is 9346365562.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 2655636439 - 25 = 2655636407 is a prime.
It is a super-2 number, since 2×26556364392 = 14104809792289201442, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 2655636392 and 2655636401.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (2655636449) 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 as a sum of consecutive naturals, namely, 1327818219 + 1327818220.
It is an arithmetic number, because the mean of its divisors is an integer number (1327818220).
Almost surely, 22655636439 is an apocalyptic number.
2655636439 is a deficient number, since it is larger than the sum of its proper divisors (1).
2655636439 is an equidigital number, since it uses as much as digits as its factorization.
2655636439 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 3499200, while the sum is 49.
The square root of 2655636439 is about 51532.8675604221.
The cubic root of 2655636439 is about 1384.8079232476.
The spelling of 2655636439 in words is "two billion, six hundred fifty-five million, six hundred thirty-six thousand, four hundred thirty-nine".