556172838829 has 2 divisors, whose sum is σ = 556172838830. Its totient is φ = 556172838828.

The previous prime is 556172838811. The next prime is 556172838929. The reversal of 556172838829 is 928838271655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 518829208804 + 37343630025 = 720298^2 + 193245^2 .

It is a cyclic number.

It is not a de Polignac number, because 556172838829 - 2¹⁵ = 556172806061 is a prime.

It is a super-2 number, since 2×556172838829² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556172838229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278086419414 + 278086419415.

It is an arithmetic number, because the mean of its divisors is an integer number (278086419415).

Almost surely, 2^556172838829 is an apocalyptic number.

It is an amenable number.

556172838829 is a deficient number, since it is larger than the sum of its proper divisors (1).

556172838829 is an equidigital number, since it uses as much as digits as its factorization.

556172838829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58060800, while the sum is 64.

The spelling of 556172838829 in words is "five hundred fifty-six billion, one hundred seventy-two million, eight hundred thirty-eight thousand, eight hundred twenty-nine".