51264327529 has 2 divisors, whose sum is σ = 51264327530. Its totient is φ = 51264327528.

The previous prime is 51264327493. The next prime is 51264327553. The reversal of 51264327529 is 92572346215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47158465600 + 4105861929 = 217160^2 + 64077^2 .

It is a cyclic number.

It is not a de Polignac number, because 51264327529 - 2¹¹ = 51264325481 is a prime.

It is not a weakly prime, because it can be changed into another prime (51264327559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25632163764 + 25632163765.

It is an arithmetic number, because the mean of its divisors is an integer number (25632163765).

Almost surely, 2^51264327529 is an apocalyptic number.

It is an amenable number.

51264327529 is a deficient number, since it is larger than the sum of its proper divisors (1).

51264327529 is an equidigital number, since it uses as much as digits as its factorization.

51264327529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 907200, while the sum is 46.

The spelling of 51264327529 in words is "fifty-one billion, two hundred sixty-four million, three hundred twenty-seven thousand, five hundred twenty-nine".