50505550643 has 2 divisors, whose sum is σ = 50505550644. Its totient is φ = 50505550642.

The previous prime is 50505550639. The next prime is 50505550651. The reversal of 50505550643 is 34605550505.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 50505550643 - 2² = 50505550639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 50505550597 and 50505550606.

It is not a weakly prime, because it can be changed into another prime (50505550603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25252775321 + 25252775322.

It is an arithmetic number, because the mean of its divisors is an integer number (25252775322).

Almost surely, 2^50505550643 is an apocalyptic number.

50505550643 is a deficient number, since it is larger than the sum of its proper divisors (1).

50505550643 is an equidigital number, since it uses as much as digits as its factorization.

50505550643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225000, while the sum is 38.

The spelling of 50505550643 in words is "fifty billion, five hundred five million, five hundred fifty thousand, six hundred forty-three".