28859554161 has 27 divisors (see below), whose sum is σ = 44295681963. Its totient is φ = 18102519360.

The previous prime is 28859554121. The next prime is 28859554177. The reversal of 28859554161 is 16145595882.

The square root of 28859554161 is 169881.

It is a perfect power (a square), and thus also a powerful number.

28859554161 is a `hidden beast` number, since 2 + 8 + 8 + 5 + 95 + 541 + 6 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 22468511025 + 6391043136 = 149895^2 + 79944^2 .

It is not a de Polignac number, because 28859554161 - 2⁹ = 28859553649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28859554098 and 28859554107.

It is not an unprimeable number, because it can be changed into a prime (28859554121) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 8662266 + ... + 8665596.

Almost surely, 2^28859554161 is an apocalyptic number.

28859554161 is the 169881-st square number.

28859554161 is the 84941-st centered octagonal number.

It is an amenable number.

28859554161 is a deficient number, since it is larger than the sum of its proper divisors (15436127802).

28859554161 is an frugal number, since it uses more digits than its factorization.

28859554161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6702 (or 3351 counting only the distinct ones).

The product of its digits is 3456000, while the sum is 54.

The spelling of 28859554161 in words is "twenty-eight billion, eight hundred fifty-nine million, five hundred fifty-four thousand, one hundred sixty-one".