2556554137229 has 4 divisors (see below), whose sum is σ = 2556898833084. Its totient is φ = 2556209441376.

The previous prime is 2556554137217. The next prime is 2556554137273. The reversal of 2556554137229 is 9227314556552.

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 1110235220329 + 1446318916900 = 1053677^2 + 1202630^2 .

It is a cyclic number.

It is not a de Polignac number, because 2556554137229 - 2⁴ = 2556554137213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2556554137289) 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 in 3 ways as a sum of consecutive naturals, for example, 172336802 + ... + 172351635.

It is an arithmetic number, because the mean of its divisors is an integer number (639224708271).

Almost surely, 2^{2556554137229} is an apocalyptic number.

It is an amenable number.

2556554137229 is a deficient number, since it is larger than the sum of its proper divisors (344695855).

2556554137229 is an equidigital number, since it uses as much as digits as its factorization.

2556554137229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344695854.

The product of its digits is 22680000, while the sum is 56.

The spelling of 2556554137229 in words is "two trillion, five hundred fifty-six billion, five hundred fifty-four million, one hundred thirty-seven thousand, two hundred twenty-nine".