8311544664 has 128 divisors (see below), whose sum is σ = 22794670080. Its totient is φ = 2514124800.

The previous prime is 8311544653. The next prime is 8311544687. The reversal of 8311544664 is 4664451138.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3932472 + ... + 3934584.

It is an arithmetic number, because the mean of its divisors is an integer number (178083360).

Almost surely, 2^8311544664 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 8311544664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11397335040).

8311544664 is an abundant number, since it is smaller than the sum of its proper divisors (14483125416).

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

8311544664 is a wasteful number, since it uses less digits than its factorization.

8311544664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2481 (or 2477 counting only the distinct ones).

The product of its digits is 276480, while the sum is 42.

The square root of 8311544664 is about 91167.6733497132. The cubic root of 8311544664 is about 2025.6321484413.

The spelling of 8311544664 in words is "eight billion, three hundred eleven million, five hundred forty-four thousand, six hundred sixty-four".