50820598721 has 2 divisors, whose sum is σ = 50820598722. Its totient is φ = 50820598720.

The previous prime is 50820598693. The next prime is 50820598729. The reversal of 50820598721 is 12789502805.

50820598721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48670978225 + 2149620496 = 220615^2 + 46364^2 .

It is a cyclic number.

It is not a de Polignac number, because 50820598721 - 2¹⁸ = 50820336577 is a prime.

It is not a weakly prime, because it can be changed into another prime (50820598729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25410299360 + 25410299361.

It is an arithmetic number, because the mean of its divisors is an integer number (25410299361).

Almost surely, 2^50820598721 is an apocalyptic number.

It is an amenable number.

50820598721 is a deficient number, since it is larger than the sum of its proper divisors (1).

50820598721 is an equidigital number, since it uses as much as digits as its factorization.

50820598721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 403200, while the sum is 47.

The spelling of 50820598721 in words is "fifty billion, eight hundred twenty million, five hundred ninety-eight thousand, seven hundred twenty-one".