51826344769 has 2 divisors, whose sum is σ = 51826344770. Its totient is φ = 51826344768.

The previous prime is 51826344761. The next prime is 51826344847. The reversal of 51826344769 is 96744362815.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51014094769 + 812250000 = 225863^2 + 28500^2 .

It is a cyclic number.

It is not a de Polignac number, because 51826344769 - 2³ = 51826344761 is a prime.

It is a super-2 number, since 2×51826344769² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51826344761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25913172384 + 25913172385.

It is an arithmetic number, because the mean of its divisors is an integer number (25913172385).

Almost surely, 2^51826344769 is an apocalyptic number.

It is an amenable number.

51826344769 is a deficient number, since it is larger than the sum of its proper divisors (1).

51826344769 is an equidigital number, since it uses as much as digits as its factorization.

51826344769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8709120, while the sum is 55.

The spelling of 51826344769 in words is "fifty-one billion, eight hundred twenty-six million, three hundred forty-four thousand, seven hundred sixty-nine".