6534643464 has 128 divisors (see below), whose sum is σ = 19507132800. Its totient is φ = 2019409920.

The previous prime is 6534643429. The next prime is 6534643487. The reversal of 6534643464 is 4643464356.

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, 232744 + ... + 259304.

It is an arithmetic number, because the mean of its divisors is an integer number (152399475).

Almost surely, 2^6534643464 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 6534643464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9753566400).

6534643464 is an abundant number, since it is smaller than the sum of its proper divisors (12972489336).

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

6534643464 is a wasteful number, since it uses less digits than its factorization.

6534643464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26660 (or 26650 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 45.

The square root of 6534643464 is about 80837.1416120090. The cubic root of 6534643464 is about 1869.5652724660.

The spelling of 6534643464 in words is "six billion, five hundred thirty-four million, six hundred forty-three thousand, four hundred sixty-four".