9969274773920 has 768 divisors, whose sum is σ = 30260185804800. Its totient is φ = 3014224773120.

The previous prime is 9969274773919. The next prime is 9969274773971. The reversal of 9969274773920 is 293774729699.

It is a super-2 number, since 2×9969274773920² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 25111523162 + ... + 25111523558.

It is an arithmetic number, because the mean of its divisors is an integer number (39401283600).

Almost surely, 2^{9969274773920} 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 9969274773920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15130092902400).

9969274773920 is an abundant number, since it is smaller than the sum of its proper divisors (20290911030880).

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

9969274773920 is a wasteful number, since it uses less digits than its factorization.

9969274773920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861 (or 853 counting only the distinct ones).

The product of its (nonzero) digits is 648121824, while the sum is 74.

The spelling of 9969274773920 in words is "nine trillion, nine hundred sixty-nine billion, two hundred seventy-four million, seven hundred seventy-three thousand, nine hundred twenty".