51244567511 has 2 divisors, whose sum is σ = 51244567512. Its totient is φ = 51244567510.

The previous prime is 51244567501. The next prime is 51244567513. The reversal of 51244567511 is 11576544215.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51244567511 is a prime.

Together with 51244567513, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51244567513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25622283755 + 25622283756.

It is an arithmetic number, because the mean of its divisors is an integer number (25622283756).

Almost surely, 2^51244567511 is an apocalyptic number.

51244567511 is a deficient number, since it is larger than the sum of its proper divisors (1).

51244567511 is an equidigital number, since it uses as much as digits as its factorization.

51244567511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 168000, while the sum is 41.

The spelling of 51244567511 in words is "fifty-one billion, two hundred forty-four million, five hundred sixty-seven thousand, five hundred eleven".