51134440111 has 2 divisors, whose sum is σ = 51134440112. Its totient is φ = 51134440110.

The previous prime is 51134440109. The next prime is 51134440183. The reversal of 51134440111 is 11104443115.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51134440111 - 2¹ = 51134440109 is a prime.

It is a super-3 number, since 3×51134440111³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 51134440109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51134440711) 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, 25567220055 + 25567220056.

It is an arithmetic number, because the mean of its divisors is an integer number (25567220056).

Almost surely, 2^51134440111 is an apocalyptic number.

51134440111 is a deficient number, since it is larger than the sum of its proper divisors (1).

51134440111 is an equidigital number, since it uses as much as digits as its factorization.

51134440111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 25.

Adding to 51134440111 its reverse (11104443115), we get a palindrome (62238883226).

The spelling of 51134440111 in words is "fifty-one billion, one hundred thirty-four million, four hundred forty thousand, one hundred eleven".