9997822514789 has 8 divisors (see below), whose sum is σ = 10248818919192. Its totient is φ = 9747166447360.

The previous prime is 9997822514773. The next prime is 9997822514843. The reversal of 9997822514789 is 9874152287999.

9997822514789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1815837100900 + 8181985413889 = 1347530^2 + 2860417^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9997822514789 - 2⁴ = 9997822514773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9997822514759) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85024754 + ... + 85142259.

It is an arithmetic number, because the mean of its divisors is an integer number (1281102364899).

Almost surely, 2^{9997822514789} is an apocalyptic number.

It is an amenable number.

9997822514789 is a deficient number, since it is larger than the sum of its proper divisors (250996404403).

9997822514789 is a wasteful number, since it uses less digits than its factorization.

9997822514789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170168487.

The product of its digits is 1646023680, while the sum is 80.

The spelling of 9997822514789 in words is "nine trillion, nine hundred ninety-seven billion, eight hundred twenty-two million, five hundred fourteen thousand, seven hundred eighty-nine".