998784000001 has 2 divisors, whose sum is σ = 998784000002. Its totient is φ = 998784000000.

The previous prime is 998783999977. The next prime is 998784000073. The reversal of 998784000001 is 100000487899.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 620652474225 + 378131525776 = 787815^2 + 614924^2 .

It is a cyclic number.

It is not a de Polignac number, because 998784000001 - 2¹³ = 998783991809 is a prime.

It is not a weakly prime, because it can be changed into another prime (998784000101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499392000000 + 499392000001.

It is an arithmetic number, because the mean of its divisors is an integer number (499392000001).

Almost surely, 2^998784000001 is an apocalyptic number.

It is an amenable number.

998784000001 is a deficient number, since it is larger than the sum of its proper divisors (1).

998784000001 is an equidigital number, since it uses as much as digits as its factorization.

998784000001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 46.

The spelling of 998784000001 in words is "nine hundred ninety-eight billion, seven hundred eighty-four million, one", and thus it is an aban number.