50617728389 has 2 divisors, whose sum is σ = 50617728390. Its totient is φ = 50617728388.

The previous prime is 50617728353. The next prime is 50617728397. The reversal of 50617728389 is 98382771605.

50617728389 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., 49983544900 + 634183489 = 223570^2 + 25183^2 .

It is a cyclic number.

It is not a de Polignac number, because 50617728389 - 2²⁸ = 50349292933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50617728319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25308864194 + 25308864195.

It is an arithmetic number, because the mean of its divisors is an integer number (25308864195).

Almost surely, 2^50617728389 is an apocalyptic number.

It is an amenable number.

50617728389 is a deficient number, since it is larger than the sum of its proper divisors (1).

50617728389 is an equidigital number, since it uses as much as digits as its factorization.

50617728389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5080320, while the sum is 56.

The spelling of 50617728389 in words is "fifty billion, six hundred seventeen million, seven hundred twenty-eight thousand, three hundred eighty-nine".