98123728811 has 2 divisors, whose sum is σ = 98123728812. Its totient is φ = 98123728810.

The previous prime is 98123728711. The next prime is 98123728819. The reversal of 98123728811 is 11882732189.

It is a strong prime.

It is an emirp because it is prime and its reverse (11882732189) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98123728811 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 98123728811.

It is not a weakly prime, because it can be changed into another prime (98123728819) 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, 49061864405 + 49061864406.

It is an arithmetic number, because the mean of its divisors is an integer number (49061864406).

Almost surely, 2^98123728811 is an apocalyptic number.

98123728811 is a deficient number, since it is larger than the sum of its proper divisors (1).

98123728811 is an equidigital number, since it uses as much as digits as its factorization.

98123728811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 50.

The spelling of 98123728811 in words is "ninety-eight billion, one hundred twenty-three million, seven hundred twenty-eight thousand, eight hundred eleven".