98999819377 has 2 divisors, whose sum is σ = 98999819378. Its totient is φ = 98999819376.

The previous prime is 98999819351. The next prime is 98999819389. The reversal of 98999819377 is 77391899989.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65090806641 + 33909012736 = 255129^2 + 184144^2 .

It is a cyclic number.

It is not a de Polignac number, because 98999819377 - 2¹⁵ = 98999786609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 98999819297 and 98999819306.

It is not a weakly prime, because it can be changed into another prime (98999819777) 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, 49499909688 + 49499909689.

It is an arithmetic number, because the mean of its divisors is an integer number (49499909689).

Almost surely, 2^98999819377 is an apocalyptic number.

It is an amenable number.

98999819377 is a deficient number, since it is larger than the sum of its proper divisors (1).

98999819377 is an equidigital number, since it uses as much as digits as its factorization.

98999819377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 555532992, while the sum is 79.

The spelling of 98999819377 in words is "ninety-eight billion, nine hundred ninety-nine million, eight hundred nineteen thousand, three hundred seventy-seven".