51798026239 has 2 divisors, whose sum is σ = 51798026240. Its totient is φ = 51798026238.

The previous prime is 51798026227. The next prime is 51798026243. The reversal of 51798026239 is 93262089715.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51798026239 is a prime.

It is a super-2 number, since 2×51798026239² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51798026249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25899013119 + 25899013120.

It is an arithmetic number, because the mean of its divisors is an integer number (25899013120).

Almost surely, 2^51798026239 is an apocalyptic number.

51798026239 is a deficient number, since it is larger than the sum of its proper divisors (1).

51798026239 is an equidigital number, since it uses as much as digits as its factorization.

51798026239 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 51798026239 in words is "fifty-one billion, seven hundred ninety-eight million, twenty-six thousand, two hundred thirty-nine".