98721844812789 has 16 divisors (see below), whose sum is σ = 143597912140800. Its totient is φ = 59830378805360.

The previous prime is 98721844812757. The next prime is 98721844812821.

98721844812789 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (98721844812757) and next prime (98721844812821).

It is a cyclic number.

It is not a de Polignac number, because 98721844812789 - 2⁵ = 98721844812757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98721844812989) 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, 24132189 + ... + 27925010.

It is an arithmetic number, because the mean of its divisors is an integer number (8974869508800).

Almost surely, 2^{98721844812789} is an apocalyptic number.

It is an amenable number.

98721844812789 is a deficient number, since it is larger than the sum of its proper divisors (44876067328011).

98721844812789 is a wasteful number, since it uses less digits than its factorization.

98721844812789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52114680.

The product of its digits is 1040449536, while the sum is 78.

The spelling of 98721844812789 in words is "ninety-eight trillion, seven hundred twenty-one billion, eight hundred forty-four million, eight hundred twelve thousand, seven hundred eighty-nine".