6143553556 has 72 divisors (see below), whose sum is σ = 13520865120. Its totient is φ = 2426905152.

The previous prime is 6143553509. The next prime is 6143553571. The reversal of 6143553556 is 6553553416.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115495 + ... + 160081.

Almost surely, 2^6143553556 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 6143553556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6760432560).

6143553556 is an abundant number, since it is smaller than the sum of its proper divisors (7377311564).

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

6143553556 is a wasteful number, since it uses less digits than its factorization.

6143553556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44661 (or 44652 counting only the distinct ones).

The product of its digits is 810000, while the sum is 43.

The square root of 6143553556 is about 78380.8239048302. The cubic root of 6143553556 is about 1831.4984249617.

The spelling of 6143553556 in words is "six billion, one hundred forty-three million, five hundred fifty-three thousand, five hundred fifty-six".