2555555803369 has 4 divisors (see below), whose sum is σ = 2555560293460. Its totient is φ = 2555551313280.

The previous prime is 2555555803321. The next prime is 2555555803397. The reversal of 2555555803369 is 9633085555552.

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 2421882937600 + 133672865769 = 1556240^2 + 365613^2 .

It is a cyclic number.

It is not a de Polignac number, because 2555555803369 - 2¹⁵ = 2555555770601 is a prime.

It is a super-2 number, since 2×2555555803369² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2555555801369) 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, 1241904 + ... + 2579425.

It is an arithmetic number, because the mean of its divisors is an integer number (638890073365).

Almost surely, 2^{2555555803369} is an apocalyptic number.

It is an amenable number.

2555555803369 is a deficient number, since it is larger than the sum of its proper divisors (4490091).

2555555803369 is an equidigital number, since it uses as much as digits as its factorization.

2555555803369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4490090.

The product of its (nonzero) digits is 121500000, while the sum is 61.

The spelling of 2555555803369 in words is "two trillion, five hundred fifty-five billion, five hundred fifty-five million, eight hundred three thousand, three hundred sixty-nine".