2255165061613 has 4 divisors (see below), whose sum is σ = 2310169087548. Its totient is φ = 2200161035680.

The previous prime is 2255165061607. The next prime is 2255165061629. The reversal of 2255165061613 is 3161605615522.

It is a happy number.

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 1341376279684 + 913788781929 = 1158178^2 + 955923^2 .

It is a cyclic number.

It is not a de Polignac number, because 2255165061613 - 2⁹ = 2255165061101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2255165061613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2255165061673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27502012906 + ... + 27502012987.

It is an arithmetic number, because the mean of its divisors is an integer number (577542271887).

Almost surely, 2^{2255165061613} is an apocalyptic number.

It is an amenable number.

2255165061613 is a deficient number, since it is larger than the sum of its proper divisors (55004025935).

2255165061613 is an equidigital number, since it uses as much as digits as its factorization.

2255165061613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55004025934.

The product of its (nonzero) digits is 324000, while the sum is 43.

The spelling of 2255165061613 in words is "two trillion, two hundred fifty-five billion, one hundred sixty-five million, sixty-one thousand, six hundred thirteen".