6441535556 has 48 divisors (see below), whose sum is σ = 11684736000. Its totient is φ = 3105366528.

The previous prime is 6441535519. The next prime is 6441535561. The reversal of 6441535556 is 6555351446.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6140120 + ... + 6141168.

It is an arithmetic number, because the mean of its divisors is an integer number (243432000).

Almost surely, 2^6441535556 is an apocalyptic number.

It is an amenable number.

6441535556 is a deficient number, since it is larger than the sum of its proper divisors (5243200444).

6441535556 is a wasteful number, since it uses less digits than its factorization.

6441535556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1556 (or 1554 counting only the distinct ones).

The product of its digits is 1080000, while the sum is 44.

The square root of 6441535556 is about 80259.1773942395. The cubic root of 6441535556 is about 1860.6433543516.

The spelling of 6441535556 in words is "six billion, four hundred forty-one million, five hundred thirty-five thousand, five hundred fifty-six".