51903719459 has 2 divisors, whose sum is σ = 51903719460. Its totient is φ = 51903719458.

The previous prime is 51903719447. The next prime is 51903719503. The reversal of 51903719459 is 95491730915.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51903719459 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51903719459.

It is not a weakly prime, because it can be changed into another prime (51903719059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25951859729 + 25951859730.

It is an arithmetic number, because the mean of its divisors is an integer number (25951859730).

Almost surely, 2^51903719459 is an apocalyptic number.

51903719459 is a deficient number, since it is larger than the sum of its proper divisors (1).

51903719459 is an equidigital number, since it uses as much as digits as its factorization.

51903719459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1530900, while the sum is 53.

The spelling of 51903719459 in words is "fifty-one billion, nine hundred three million, seven hundred nineteen thousand, four hundred fifty-nine".