6556651120 has 160 divisors (see below), whose sum is σ = 16823298240. Its totient is φ = 2366177280.

The previous prime is 6556651097. The next prime is 6556651133. The reversal of 6556651120 is 211566556.

It is a self number, because there is not a number n which added to its sum of digits gives 6556651120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3288844 + ... + 3290836.

It is an arithmetic number, because the mean of its divisors is an integer number (105145614).

Almost surely, 2^6556651120 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 6556651120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8411649120).

6556651120 is an abundant number, since it is smaller than the sum of its proper divisors (10266647120).

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

6556651120 is a wasteful number, since it uses less digits than its factorization.

6556651120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2123 (or 2117 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 37.

The square root of 6556651120 is about 80973.1506117923. The cubic root of 6556651120 is about 1871.6617217546.

The spelling of 6556651120 in words is "six billion, five hundred fifty-six million, six hundred fifty-one thousand, one hundred twenty".