6404611312 has 60 divisors (see below), whose sum is σ = 13972418208. Its totient is φ = 2840147200.

The previous prime is 6404611309. The next prime is 6404611313. The reversal of 6404611312 is 2131164046.

It is a super-2 number, since 2×6404611312² = 82038092115596722688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6404611313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39033 + ... + 119719.

Almost surely, 2^6404611312 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 6404611312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6986209104).

6404611312 is an abundant number, since it is smaller than the sum of its proper divisors (7567806896).

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

6404611312 is a wasteful number, since it uses less digits than its factorization.

6404611312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80758 (or 80741 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 6404611312 is about 80028.8155104147. The cubic root of 6404611312 is about 1857.0813391896.

Adding to 6404611312 its reverse (2131164046), we get a palindrome (8535775358).

It can be divided in two parts, 6404 and 611312, that added together give a palindrome (617716).

The spelling of 6404611312 in words is "six billion, four hundred four million, six hundred eleven thousand, three hundred twelve".