98771017789 has 4 divisors (see below), whose sum is σ = 98774872956. Its totient is φ = 98767162624.

The previous prime is 98771017747. The next prime is 98771017801.

98771017789 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24537656025 + 74233361764 = 156645^2 + 272458^2 .

It is a cyclic number.

It is not a de Polignac number, because 98771017789 - 2²⁹ = 98234146877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 98771017789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98771017489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1888894 + ... + 1940479.

It is an arithmetic number, because the mean of its divisors is an integer number (24693718239).

Almost surely, 2^98771017789 is an apocalyptic number.

It is an amenable number.

98771017789 is a deficient number, since it is larger than the sum of its proper divisors (3855167).

98771017789 is a wasteful number, since it uses less digits than its factorization.

98771017789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3855166.

The product of its (nonzero) digits is 12446784, while the sum is 64.

The spelling of 98771017789 in words is "ninety-eight billion, seven hundred seventy-one million, seventeen thousand, seven hundred eighty-nine".