51322547677 has 2 divisors, whose sum is σ = 51322547678. Its totient is φ = 51322547676.

The previous prime is 51322547641. The next prime is 51322547687. The reversal of 51322547677 is 77674522315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37951325721 + 13371221956 = 194811^2 + 115634^2 .

It is a cyclic number.

It is not a de Polignac number, because 51322547677 - 2¹¹ = 51322545629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51322547677.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51322547687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25661273838 + 25661273839.

It is an arithmetic number, because the mean of its divisors is an integer number (25661273839).

Almost surely, 2^51322547677 is an apocalyptic number.

It is an amenable number.

51322547677 is a deficient number, since it is larger than the sum of its proper divisors (1).

51322547677 is an equidigital number, since it uses as much as digits as its factorization.

51322547677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2469600, while the sum is 49.

The spelling of 51322547677 in words is "fifty-one billion, three hundred twenty-two million, five hundred forty-seven thousand, six hundred seventy-seven".