6446532412 has 24 divisors (see below), whose sum is σ = 11374077456. Its totient is φ = 3196871808.

The previous prime is 6446532403. The next prime is 6446532457. The reversal of 6446532412 is 2142356446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344448 + ... + 362680.

It is an arithmetic number, because the mean of its divisors is an integer number (473919894).

Almost surely, 2^6446532412 is an apocalyptic number.

It is an amenable number.

6446532412 is a deficient number, since it is larger than the sum of its proper divisors (4927545044).

6446532412 is a wasteful number, since it uses less digits than its factorization.

6446532412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18957 (or 18955 counting only the distinct ones).

The product of its digits is 138240, while the sum is 37.

The square root of 6446532412 is about 80290.3008588210. The cubic root of 6446532412 is about 1861.1243454548.

Adding to 6446532412 its reverse (2142356446), we get a palindrome (8588888858).

The spelling of 6446532412 in words is "six billion, four hundred forty-six million, five hundred thirty-two thousand, four hundred twelve".