9651196961280 has 960 divisors, whose sum is σ = 39673464450048. Its totient is φ = 2122424156160.

The previous prime is 9651196961261. The next prime is 9651196961291. The reversal of 9651196961280 is 821696911569.

9651196961280 is a `hidden beast` number, since 9 + 6 + 5 + 1 + 1 + 9 + 6 + 9 + 612 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (960).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 464637295 + ... + 464658065.

Almost surely, 2^{9651196961280} is an apocalyptic number.

9651196961280 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 9651196961280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19836732225024).

9651196961280 is an abundant number, since it is smaller than the sum of its proper divisors (30022267488768).

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

9651196961280 is a wasteful number, since it uses less digits than its factorization.

9651196961280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20917 (or 20898 counting only the distinct ones).

The product of its (nonzero) digits is 12597120, while the sum is 63.

The spelling of 9651196961280 in words is "nine trillion, six hundred fifty-one billion, one hundred ninety-six million, nine hundred sixty-one thousand, two hundred eighty".