6441433340 has 12 divisors (see below), whose sum is σ = 13527010056. Its totient is φ = 2576573328.

The previous prime is 6441433303. The next prime is 6441433379. The reversal of 6441433340 is 433341446.

It is a junction number, because it is equal to n+sod(n) for n = 6441433297 and 6441433306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161035814 + ... + 161035853.

It is an arithmetic number, because the mean of its divisors is an integer number (1127250838).

Almost surely, 2^6441433340 is an apocalyptic number.

It is an amenable number.

6441433340 is an abundant number, since it is smaller than the sum of its proper divisors (7085576716).

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

6441433340 is a wasteful number, since it uses less digits than its factorization.

6441433340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322071676 (or 322071674 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 32.

The square root of 6441433340 is about 80258.5406047232. The cubic root of 6441433340 is about 1860.6335125717.

Adding to 6441433340 its reverse (433341446), we get a palindrome (6874774786).

The spelling of 6441433340 in words is "six billion, four hundred forty-one million, four hundred thirty-three thousand, three hundred forty".