51260247919 has 2 divisors, whose sum is σ = 51260247920. Its totient is φ = 51260247918.

The previous prime is 51260247911. The next prime is 51260247937. The reversal of 51260247919 is 91974206215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51260247919 - 2³ = 51260247911 is a prime.

It is a super-2 number, since 2×51260247919² (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 (51260247911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25630123959 + 25630123960.

It is an arithmetic number, because the mean of its divisors is an integer number (25630123960).

Almost surely, 2^51260247919 is an apocalyptic number.

51260247919 is a deficient number, since it is larger than the sum of its proper divisors (1).

51260247919 is an equidigital number, since it uses as much as digits as its factorization.

51260247919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 46.

The spelling of 51260247919 in words is "fifty-one billion, two hundred sixty million, two hundred forty-seven thousand, nine hundred nineteen".