5111155556369 has 2 divisors, whose sum is σ = 5111155556370. Its totient is φ = 5111155556368.

The previous prime is 5111155556327. The next prime is 5111155556371. The reversal of 5111155556369 is 9636555511115.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5076256833025 + 34898723344 = 2253055^2 + 186812^2 .

It is a cyclic number.

It is not a de Polignac number, because 5111155556369 - 2⁸ = 5111155556113 is a prime.

It is a super-2 number, since 2×5111155556369² (a number of 26 digits) contains 22 as substring.

Together with 5111155556371, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5111155556369.

It is not a weakly prime, because it can be changed into another prime (5111155556389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2555577778184 + 2555577778185.

It is an arithmetic number, because the mean of its divisors is an integer number (2555577778185).

Almost surely, 2^{5111155556369} is an apocalyptic number.

It is an amenable number.

5111155556369 is a deficient number, since it is larger than the sum of its proper divisors (1).

5111155556369 is an equidigital number, since it uses as much as digits as its factorization.

5111155556369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3037500, while the sum is 53.

The spelling of 5111155556369 in words is "five trillion, one hundred eleven billion, one hundred fifty-five million, five hundred fifty-six thousand, three hundred sixty-nine".