6557556336 has 240 divisors, whose sum is σ = 19195048224. Its totient is φ = 1921941504.

The previous prime is 6557556329. The next prime is 6557556337. The reversal of 6557556336 is 6336557556.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6557556337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33286990 + ... + 33287186.

Almost surely, 2^6557556336 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 6557556336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9597524112).

6557556336 is an abundant number, since it is smaller than the sum of its proper divisors (12637491888).

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

6557556336 is a wasteful number, since it uses less digits than its factorization.

6557556336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376 (or 351 counting only the distinct ones).

The product of its digits is 8505000, while the sum is 51.

The square root of 6557556336 is about 80978.7400247744. The cubic root of 6557556336 is about 1871.7478521150.

The spelling of 6557556336 in words is "six billion, five hundred fifty-seven million, five hundred fifty-six thousand, three hundred thirty-six".