9609971280 has 320 divisors, whose sum is σ = 37932572160. Its totient is φ = 1957552128.

The previous prime is 9609971279. The next prime is 9609971311. The reversal of 9609971280 is 821799069.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 625774 + ... + 640946.

It is an arithmetic number, because the mean of its divisors is an integer number (118539288).

Almost surely, 2^9609971280 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 9609971280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18966286080).

9609971280 is an abundant number, since it is smaller than the sum of its proper divisors (28322600880).

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

9609971280 is a wasteful number, since it uses less digits than its factorization.

9609971280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15238 (or 15232 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 51.

The square root of 9609971280 is about 98030.4609802484. The cubic root of 9609971280 is about 2126.0527216729.

The spelling of 9609971280 in words is "nine billion, six hundred nine million, nine hundred seventy-one thousand, two hundred eighty".