556172838811 has 2 divisors, whose sum is σ = 556172838812. Its totient is φ = 556172838810.

The previous prime is 556172838751. The next prime is 556172838829. The reversal of 556172838811 is 118838271655.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 556172838811 - 2¹¹ = 556172836763 is a prime.

It is not a weakly prime, because it can be changed into another prime (556172838311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278086419405 + 278086419406.

It is an arithmetic number, because the mean of its divisors is an integer number (278086419406).

Almost surely, 2^556172838811 is an apocalyptic number.

556172838811 is a deficient number, since it is larger than the sum of its proper divisors (1).

556172838811 is an equidigital number, since it uses as much as digits as its factorization.

556172838811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3225600, while the sum is 55.

The spelling of 556172838811 in words is "five hundred fifty-six billion, one hundred seventy-two million, eight hundred thirty-eight thousand, eight hundred eleven".