98510565561 has 16 divisors (see below), whose sum is σ = 134652634368. Its totient is φ = 64023523200.

The previous prime is 98510565539. The next prime is 98510565581. The reversal of 98510565561 is 16556501589.

It is a happy number.

It is not a de Polignac number, because 98510565561 - 2¹¹ = 98510563513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (98510565511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138550 + ... + 464991.

It is an arithmetic number, because the mean of its divisors is an integer number (8415789648).

Almost surely, 2^98510565561 is an apocalyptic number.

It is an amenable number.

98510565561 is a deficient number, since it is larger than the sum of its proper divisors (36142068807).

98510565561 is a wasteful number, since it uses less digits than its factorization.

98510565561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604912.

The product of its (nonzero) digits is 1620000, while the sum is 51.

The spelling of 98510565561 in words is "ninety-eight billion, five hundred ten million, five hundred sixty-five thousand, five hundred sixty-one".