98135090813 has 2 divisors, whose sum is σ = 98135090814. Its totient is φ = 98135090812.

The previous prime is 98135090797. The next prime is 98135090843. The reversal of 98135090813 is 31809053189.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88258308889 + 9876781924 = 297083^2 + 99382^2 .

It is a cyclic number.

It is not a de Polignac number, because 98135090813 - 2⁴ = 98135090797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98135090843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49067545406 + 49067545407.

It is an arithmetic number, because the mean of its divisors is an integer number (49067545407).

Almost surely, 2^98135090813 is an apocalyptic number.

It is an amenable number.

98135090813 is a deficient number, since it is larger than the sum of its proper divisors (1).

98135090813 is an equidigital number, since it uses as much as digits as its factorization.

98135090813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 47.

The spelling of 98135090813 in words is "ninety-eight billion, one hundred thirty-five million, ninety thousand, eight hundred thirteen".