6446744535 has 96 divisors (see below), whose sum is σ = 13119667200. Its totient is φ = 2673027840.

The previous prime is 6446744527. The next prime is 6446744561. The reversal of 6446744535 is 5354476446.

It is not a de Polignac number, because 6446744535 - 2³ = 6446744527 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5812561 + ... + 5813669.

It is an arithmetic number, because the mean of its divisors is an integer number (136663200).

Almost surely, 2^6446744535 is an apocalyptic number.

6446744535 is an abundant number, since it is smaller than the sum of its proper divisors (6672922665).

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

6446744535 is a wasteful number, since it uses less digits than its factorization.

6446744535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1861 (or 1854 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 48.

The square root of 6446744535 is about 80291.6218232015. The cubic root of 6446744535 is about 1861.1447586488.

The spelling of 6446744535 in words is "six billion, four hundred forty-six million, seven hundred forty-four thousand, five hundred thirty-five".