4128481556 has 12 divisors (see below), whose sum is σ = 7226118900. Its totient is φ = 2063876160.

The previous prime is 4128481549. The next prime is 4128481559. The reversal of 4128481556 is 6551848214.

It can be written as a sum of positive squares in 2 ways, for example, as 3012253456 + 1116228100 = 54884^2 + 33410^2 .

It is a super-2 number, since 2×4128481556² = 34088719916464362272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4128481559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64835 + ... + 111626.

It is an arithmetic number, because the mean of its divisors is an integer number (602176575).

Almost surely, 2^4128481556 is an apocalyptic number.

It is an amenable number.

4128481556 is a deficient number, since it is larger than the sum of its proper divisors (3097637344).

4128481556 is a wasteful number, since it uses less digits than its factorization.

4128481556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182314 (or 182312 counting only the distinct ones).

The product of its digits is 307200, while the sum is 44.

The square root of 4128481556 is about 64253.2610534283. The cubic root of 4128481556 is about 1604.2182385375.

The spelling of 4128481556 in words is "four billion, one hundred twenty-eight million, four hundred eighty-one thousand, five hundred fifty-six".