9722988617472 has 1440 divisors, whose sum is σ = 34014845652480. Its totient is φ = 2738983403520.

The previous prime is 9722988617429. The next prime is 9722988617473. The reversal of 9722988617472 is 2747168892279.

9722988617472 is a `hidden beast` number, since 9 + 7 + 2 + 2 + 98 + 8 + 61 + 7 + 472 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 9722988617472.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9722988617473) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 12844106118 + ... + 12844106874.

It is an arithmetic number, because the mean of its divisors is an integer number (23621420592).

Almost surely, 2^{9722988617472} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9722988617472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17007422826240).

9722988617472 is an abundant number, since it is smaller than the sum of its proper divisors (24291857035008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9722988617472 is a wasteful number, since it uses less digits than its factorization.

9722988617472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911 (or 888 counting only the distinct ones).

The product of its digits is 341397504, while the sum is 72.

The spelling of 9722988617472 in words is "nine trillion, seven hundred twenty-two billion, nine hundred eighty-eight million, six hundred seventeen thousand, four hundred seventy-two".