51726324249577 has 2 divisors, whose sum is σ = 51726324249578. Its totient is φ = 51726324249576.

The previous prime is 51726324249547. The next prime is 51726324249641. The reversal of 51726324249577 is 77594242362715.

It is a happy number.

It is an a-pointer prime, because the next prime (51726324249641) can be obtained adding 51726324249577 to its sum of digits (64).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46761854533696 + 4964469715881 = 6838264^2 + 2228109^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51726324249577 is a prime.

It is a super-2 number, since 2×51726324249577² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51726324249547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25863162124788 + 25863162124789.

It is an arithmetic number, because the mean of its divisors is an integer number (25863162124789).

Almost surely, 2^{51726324249577} is an apocalyptic number.

It is an amenable number.

51726324249577 is a deficient number, since it is larger than the sum of its proper divisors (1).

51726324249577 is an equidigital number, since it uses as much as digits as its factorization.

51726324249577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 177811200, while the sum is 64.

The spelling of 51726324249577 in words is "fifty-one trillion, seven hundred twenty-six billion, three hundred twenty-four million, two hundred forty-nine thousand, five hundred seventy-seven".