5111331550111 has 2 divisors, whose sum is σ = 5111331550112. Its totient is φ = 5111331550110.

The previous prime is 5111331550103. The next prime is 5111331550147. The reversal of 5111331550111 is 1110551331115.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5111331550111 - 2³ = 5111331550103 is a prime.

It is a super-2 number, since 2×5111331550111² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5111331550111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5111331550181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2555665775055 + 2555665775056.

It is an arithmetic number, because the mean of its divisors is an integer number (2555665775056).

Almost surely, 2^{5111331550111} is an apocalyptic number.

5111331550111 is a deficient number, since it is larger than the sum of its proper divisors (1).

5111331550111 is an equidigital number, since it uses as much as digits as its factorization.

5111331550111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1125, while the sum is 28.

Adding to 5111331550111 its reverse (1110551331115), we get a palindrome (6221882881226).

The spelling of 5111331550111 in words is "five trillion, one hundred eleven billion, three hundred thirty-one million, five hundred fifty thousand, one hundred eleven".