6436911864 has 32 divisors (see below), whose sum is σ = 16100029440. Its totient is φ = 2144604000.

The previous prime is 6436911853. The next prime is 6436911881. The reversal of 6436911864 is 4681196346.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12862 + ... + 114189.

It is an arithmetic number, because the mean of its divisors is an integer number (503125920).

Almost surely, 2^6436911864 is an apocalyptic number.

It is an amenable number.

6436911864 is an abundant number, since it is smaller than the sum of its proper divisors (9663117576).

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

6436911864 is a wasteful number, since it uses less digits than its factorization.

6436911864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129171 (or 129167 counting only the distinct ones).

The product of its digits is 746496, while the sum is 48.

The square root of 6436911864 is about 80230.3674676864. The cubic root of 6436911864 is about 1860.1980619240.

The spelling of 6436911864 in words is "six billion, four hundred thirty-six million, nine hundred eleven thousand, eight hundred sixty-four".