51362431111 has 2 divisors, whose sum is σ = 51362431112. Its totient is φ = 51362431110.

The previous prime is 51362431073. The next prime is 51362431139. The reversal of 51362431111 is 11113426315.

It is an a-pointer prime, because the next prime (51362431139) can be obtained adding 51362431111 to its sum of digits (28).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51362431111 - 2²³ = 51354042503 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51362431111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51362431171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25681215555 + 25681215556.

It is an arithmetic number, because the mean of its divisors is an integer number (25681215556).

Almost surely, 2^51362431111 is an apocalyptic number.

51362431111 is a deficient number, since it is larger than the sum of its proper divisors (1).

51362431111 is an equidigital number, since it uses as much as digits as its factorization.

51362431111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 28.

Adding to 51362431111 its reverse (11113426315), we get a palindrome (62475857426).

The spelling of 51362431111 in words is "fifty-one billion, three hundred sixty-two million, four hundred thirty-one thousand, one hundred eleven".