50319903546221 has 2 divisors, whose sum is σ = 50319903546222. Its totient is φ = 50319903546220.

The previous prime is 50319903546167. The next prime is 50319903546293. The reversal of 50319903546221 is 12264530991305.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35794924888996 + 14524978657225 = 5982886^2 + 3811165^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50319903546221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 50319903546221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50319903546421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25159951773110 + 25159951773111.

It is an arithmetic number, because the mean of its divisors is an integer number (25159951773111).

Almost surely, 2^{50319903546221} is an apocalyptic number.

It is an amenable number.

50319903546221 is a deficient number, since it is larger than the sum of its proper divisors (1).

50319903546221 is an equidigital number, since it uses as much as digits as its factorization.

50319903546221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1749600, while the sum is 50.

The spelling of 50319903546221 in words is "fifty trillion, three hundred nineteen billion, nine hundred three million, five hundred forty-six thousand, two hundred twenty-one".