9551366345664 has 672 divisors, whose sum is σ = 32400132710400. Its totient is φ = 2652135505920.

The previous prime is 9551366345641. The next prime is 9551366345681. The reversal of 9551366345664 is 4665436631559.

9551366345664 is a `hidden beast` number, since 9 + 5 + 5 + 1 + 3 + 6 + 63 + 4 + 566 + 4 = 666.

9551366345664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 9192844857 + ... + 9192845895.

It is an arithmetic number, because the mean of its divisors is an integer number (48214483200).

Almost surely, 2^{9551366345664} 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 9551366345664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16200066355200).

9551366345664 is an abundant number, since it is smaller than the sum of its proper divisors (22848766364736).

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

9551366345664 is a wasteful number, since it uses less digits than its factorization.

9551366345664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1793 (or 1780 counting only the distinct ones).

The product of its digits is 209952000, while the sum is 63.

The spelling of 9551366345664 in words is "nine trillion, five hundred fifty-one billion, three hundred sixty-six million, three hundred forty-five thousand, six hundred sixty-four".