98777105321 has 2 divisors, whose sum is σ = 98777105322. Its totient is φ = 98777105320.

The previous prime is 98777105299. The next prime is 98777105377. The reversal of 98777105321 is 12350177789.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84518118400 + 14258986921 = 290720^2 + 119411^2 .

It is an emirp because it is prime and its reverse (12350177789) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98777105321 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 98777105321.

It is not a weakly prime, because it can be changed into another prime (98777105221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49388552660 + 49388552661.

It is an arithmetic number, because the mean of its divisors is an integer number (49388552661).

Almost surely, 2^98777105321 is an apocalyptic number.

It is an amenable number.

98777105321 is a deficient number, since it is larger than the sum of its proper divisors (1).

98777105321 is an equidigital number, since it uses as much as digits as its factorization.

98777105321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 740880, while the sum is 50.

The spelling of 98777105321 in words is "ninety-eight billion, seven hundred seventy-seven million, one hundred five thousand, three hundred twenty-one".