5611178388889 has 2 divisors, whose sum is σ = 5611178388890. Its totient is φ = 5611178388888.

The previous prime is 5611178388883. The next prime is 5611178388899. The reversal of 5611178388889 is 9888838711165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3619715528025 + 1991462860864 = 1902555^2 + 1411192^2 .

It is a cyclic number.

It is not a de Polignac number, because 5611178388889 - 2²³ = 5611170000281 is a prime.

It is not a weakly prime, because it can be changed into another prime (5611178388883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2805589194444 + 2805589194445.

It is an arithmetic number, because the mean of its divisors is an integer number (2805589194445).

Almost surely, 2^{5611178388889} is an apocalyptic number.

It is an amenable number.

5611178388889 is a deficient number, since it is larger than the sum of its proper divisors (1).

5611178388889 is an equidigital number, since it uses as much as digits as its factorization.

5611178388889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 185794560, while the sum is 73.

The spelling of 5611178388889 in words is "five trillion, six hundred eleven billion, one hundred seventy-eight million, three hundred eighty-eight thousand, eight hundred eighty-nine".