51349137289 has 2 divisors, whose sum is σ = 51349137290. Its totient is φ = 51349137288.

The previous prime is 51349137263. The next prime is 51349137349. The reversal of 51349137289 is 98273194315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44145371664 + 7203765625 = 210108^2 + 84875^2 .

It is a cyclic number.

It is not a de Polignac number, because 51349137289 - 2¹¹ = 51349135241 is a prime.

It is not a weakly prime, because it can be changed into another prime (51349137089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25674568644 + 25674568645.

It is an arithmetic number, because the mean of its divisors is an integer number (25674568645).

Almost surely, 2^51349137289 is an apocalyptic number.

It is an amenable number.

51349137289 is a deficient number, since it is larger than the sum of its proper divisors (1).

51349137289 is an equidigital number, since it uses as much as digits as its factorization.

51349137289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1632960, while the sum is 52.

The spelling of 51349137289 in words is "fifty-one billion, three hundred forty-nine million, one hundred thirty-seven thousand, two hundred eighty-nine".