5561161128 has 48 divisors (see below), whose sum is σ = 15064912980. Its totient is φ = 1853297664.

The previous prime is 5561161049. The next prime is 5561161141. The reversal of 5561161128 is 8211611655.

5561161128 is a `hidden beast` number, since 5 + 5 + 6 + 11 + 611 + 28 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5426090244 + 135070884 = 73662^2 + 11622^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 5561161092 and 5561161101.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 588376 + ... + 597752.

Almost surely, 2^5561161128 is an apocalyptic number.

It is an amenable number.

5561161128 is an abundant number, since it is smaller than the sum of its proper divisors (9503751852).

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

5561161128 is a wasteful number, since it uses less digits than its factorization.

5561161128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17626 (or 17619 counting only the distinct ones).

The product of its digits is 14400, while the sum is 36.

The square root of 5561161128 is about 74573.1930924243. The cubic root of 5561161128 is about 1771.6930960279.

The spelling of 5561161128 in words is "five billion, five hundred sixty-one million, one hundred sixty-one thousand, one hundred twenty-eight".