98761318961 has 2 divisors, whose sum is σ = 98761318962. Its totient is φ = 98761318960.

The previous prime is 98761318939. The next prime is 98761319009. The reversal of 98761318961 is 16981316789.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91848394225 + 6912924736 = 303065^2 + 83144^2 .

It is a cyclic number.

It is not a de Polignac number, because 98761318961 - 2³⁴ = 81581449777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 98761318961.

It is not a weakly prime, because it can be changed into another prime (98761318361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49380659480 + 49380659481.

It is an arithmetic number, because the mean of its divisors is an integer number (49380659481).

Almost surely, 2^98761318961 is an apocalyptic number.

It is an amenable number.

98761318961 is a deficient number, since it is larger than the sum of its proper divisors (1).

98761318961 is an equidigital number, since it uses as much as digits as its factorization.

98761318961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3919104, while the sum is 59.

The spelling of 98761318961 in words is "ninety-eight billion, seven hundred sixty-one million, three hundred eighteen thousand, nine hundred sixty-one".