5111051111 has 2 divisors, whose sum is σ = 5111051112. Its totient is φ = 5111051110.

The previous prime is 5111051087. The next prime is 5111051137. The reversal of 5111051111 is 1111501115.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5111051111 - 2⁶ = 5111051047 is a prime.

It is a super-2 number, since 2×5111051111² = 52245686918508668642, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5111051111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5111057111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2555525555 + 2555525556.

It is an arithmetic number, because the mean of its divisors is an integer number (2555525556).

Almost surely, 2^5111051111 is an apocalyptic number.

5111051111 is a deficient number, since it is larger than the sum of its proper divisors (1).

5111051111 is an equidigital number, since it uses as much as digits as its factorization.

5111051111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25, while the sum is 17.

The square root of 5111051111 is about 71491.6156692517. The cubic root of 5111051111 is about 1722.5430103369.

Adding to 5111051111 its reverse (1111501115), we get a palindrome (6222552226).

The spelling of 5111051111 in words is "five billion, one hundred eleven million, fifty-one thousand, one hundred eleven".