9697818977280 has 4224 divisors, whose sum is σ = 46575796469760. Its totient is φ = 1863891025920.

The previous prime is 9697818977279. The next prime is 9697818977317. The reversal of 9697818977280 is 827798187969.

It is a happy number.

9697818977280 is a `hidden beast` number, since 9 + 6 + 97 + 8 + 189 + 77 + 280 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 9697818977280.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 136588999645 + ... + 136588999715.

Almost surely, 2^{9697818977280} is an apocalyptic number.

9697818977280 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9697818977280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23287898234880).

9697818977280 is an abundant number, since it is smaller than the sum of its proper divisors (36877977492480).

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

9697818977280 is a wasteful number, since it uses less digits than its factorization.

9697818977280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 1536288768, while the sum is 81.

The spelling of 9697818977280 in words is "nine trillion, six hundred ninety-seven billion, eight hundred eighteen million, nine hundred seventy-seven thousand, two hundred eighty".