98999434000081 has 2 divisors, whose sum is σ = 98999434000082. Its totient is φ = 98999434000080.

The previous prime is 98999434000057. The next prime is 98999434000091. The reversal of 98999434000081 is 18000043499989.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69673093455681 + 29326340544400 = 8347041^2 + 5415380^2 .

It is an emirp because it is prime and its reverse (18000043499989) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 98999434000081 - 2⁹ = 98999433999569 is a prime.

It is a super-2 number, since 2×98999434000081² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 98999433999977 and 98999434000022.

It is not a weakly prime, because it can be changed into another prime (98999434000031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49499717000040 + 49499717000041.

It is an arithmetic number, because the mean of its divisors is an integer number (49499717000041).

Almost surely, 2^{98999434000081} is an apocalyptic number.

It is an amenable number.

98999434000081 is a deficient number, since it is larger than the sum of its proper divisors (1).

98999434000081 is an equidigital number, since it uses as much as digits as its factorization.

98999434000081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20155392, while the sum is 64.

The spelling of 98999434000081 in words is "ninety-eight trillion, nine hundred ninety-nine billion, four hundred thirty-four million, eighty-one", and thus it is an aban number.