9664791793408 has 72 divisors (see below), whose sum is σ = 19609762724720. Its totient is φ = 4752770826240.

The previous prime is 9664791793381. The next prime is 9664791793409. The reversal of 9664791793408 is 8043971974669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9664791793409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274339891 + ... + 274375117.

Almost surely, 2^{9664791793408} 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 9664791793408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9804881362360).

9664791793408 is an abundant number, since it is smaller than the sum of its proper divisors (9944970931312).

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

9664791793408 is a wasteful number, since it uses less digits than its factorization.

9664791793408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52873 (or 52859 counting only the distinct ones).

The product of its (nonzero) digits is 493807104, while the sum is 73.

The spelling of 9664791793408 in words is "nine trillion, six hundred sixty-four billion, seven hundred ninety-one million, seven hundred ninety-three thousand, four hundred eight".