9911353664 has 112 divisors (see below), whose sum is σ = 20786872320. Its totient is φ = 4682280960.

The previous prime is 9911353643. The next prime is 9911353681. The reversal of 9911353664 is 4663531199.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25878017 + ... + 25878399.

Almost surely, 2^9911353664 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 9911353664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10393436160).

9911353664 is an abundant number, since it is smaller than the sum of its proper divisors (10875518656).

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

9911353664 is a wasteful number, since it uses less digits than its factorization.

9911353664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688 (or 678 counting only the distinct ones).

The product of its digits is 524880, while the sum is 47.

The square root of 9911353664 is about 99555.7816703781. The cubic root of 9911353664 is about 2148.0496944371.

The spelling of 9911353664 in words is "nine billion, nine hundred eleven million, three hundred fifty-three thousand, six hundred sixty-four".