6557057444 has 48 divisors (see below), whose sum is σ = 13467543936. Its totient is φ = 2734905600.

The previous prime is 6557057413. The next prime is 6557057489. The reversal of 6557057444 is 4447507556.

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, 328634 + ... + 348014.

It is an arithmetic number, because the mean of its divisors is an integer number (280573832).

Almost surely, 2^6557057444 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 6557057444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6733771968).

6557057444 is an abundant number, since it is smaller than the sum of its proper divisors (6910486492).

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

6557057444 is a wasteful number, since it uses less digits than its factorization.

6557057444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19716 (or 19714 counting only the distinct ones).

The product of its (nonzero) digits is 2352000, while the sum is 47.

The square root of 6557057444 is about 80975.6595774310. The cubic root of 6557057444 is about 1871.7003840409.

The spelling of 6557057444 in words is "six billion, five hundred fifty-seven million, fifty-seven thousand, four hundred forty-four".