5269644864 has 420 divisors, whose sum is σ = 17789330944. Its totient is φ = 1539648000.

The previous prime is 5269644847. The next prime is 5269644871. The reversal of 5269644864 is 4684469625.

5269644864 is a `hidden beast` number, since 52 + 6 + 96 + 448 + 64 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 5269644864.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 19445049 + ... + 19445319.

Almost surely, 2^5269644864 is an apocalyptic number.

5269644864 is a gapful number since it is divisible by the number (54) 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 5269644864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8894665472).

5269644864 is an abundant number, since it is smaller than the sum of its proper divisors (12519686080).

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

5269644864 is a wasteful number, since it uses less digits than its factorization.

5269644864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348 (or 318 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 54.

The square root of 5269644864 is about 72592.3195937421. The cubic root of 5269644864 is about 1740.1784359220.

The spelling of 5269644864 in words is "five billion, two hundred sixty-nine million, six hundred forty-four thousand, eight hundred sixty-four".