6464113812 has 36 divisors (see below), whose sum is σ = 17596755540. Its totient is φ = 1988957952.

The previous prime is 6464113793. The next prime is 6464113849. The reversal of 6464113812 is 2183114646.

6464113812 is a `hidden beast` number, since 6 + 4 + 641 + 1 + 3 + 8 + 1 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3842264196 + 2621849616 = 61986^2 + 51204^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6905637 + ... + 6906572.

It is an arithmetic number, because the mean of its divisors is an integer number (488798765).

Almost surely, 2^6464113812 is an apocalyptic number.

It is an amenable number.

6464113812 is an abundant number, since it is smaller than the sum of its proper divisors (11132641728).

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

6464113812 is a wasteful number, since it uses less digits than its factorization.

6464113812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13812232 (or 13812227 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 6464113812 is about 80399.7127606809. The cubic root of 6464113812 is about 1862.8147358867.

The spelling of 6464113812 in words is "six billion, four hundred sixty-four million, one hundred thirteen thousand, eight hundred twelve".