50556105989 has 2 divisors, whose sum is σ = 50556105990. Its totient is φ = 50556105988.

The previous prime is 50556105973. The next prime is 50556106021. The reversal of 50556105989 is 98950165505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35941713889 + 14614392100 = 189583^2 + 120890^2 .

It is a cyclic number.

It is not a de Polignac number, because 50556105989 - 2⁴ = 50556105973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 50556105989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50556105959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25278052994 + 25278052995.

It is an arithmetic number, because the mean of its divisors is an integer number (25278052995).

Almost surely, 2^50556105989 is an apocalyptic number.

It is an amenable number.

50556105989 is a deficient number, since it is larger than the sum of its proper divisors (1).

50556105989 is an equidigital number, since it uses as much as digits as its factorization.

50556105989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430000, while the sum is 53.

The spelling of 50556105989 in words is "fifty billion, five hundred fifty-six million, one hundred five thousand, nine hundred eighty-nine".