50578860389 has 2 divisors, whose sum is σ = 50578860390. Its totient is φ = 50578860388.

The previous prime is 50578860349. The next prime is 50578860403. The reversal of 50578860389 is 98306887505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29304304225 + 21274556164 = 171185^2 + 145858^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50578860389 is a prime.

It is a super-2 number, since 2×50578860389² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50578860349) 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, 25289430194 + 25289430195.

It is an arithmetic number, because the mean of its divisors is an integer number (25289430195).

Almost surely, 2^50578860389 is an apocalyptic number.

It is an amenable number.

50578860389 is a deficient number, since it is larger than the sum of its proper divisors (1).

50578860389 is an equidigital number, since it uses as much as digits as its factorization.

50578860389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14515200, while the sum is 59.

The spelling of 50578860389 in words is "fifty billion, five hundred seventy-eight million, eight hundred sixty thousand, three hundred eighty-nine".