2805112161 has 8 divisors (see below), whose sum is σ = 4155721760. Its totient is φ = 1870074756.

The previous prime is 2805112147. The next prime is 2805112199. The reversal of 2805112161 is 1612115082.

2805112161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2805112161 - 2⁹ = 2805111649 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 103893043 = 2805112161 / (2 + 8 + 0 + 5 + 1 + 1 + 2 + 1 + 6 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2805112061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51946495 + ... + 51946548.

It is an arithmetic number, because the mean of its divisors is an integer number (519465220).

Almost surely, 2^2805112161 is an apocalyptic number.

It is an amenable number.

2805112161 is a deficient number, since it is larger than the sum of its proper divisors (1350609599).

2805112161 is a wasteful number, since it uses less digits than its factorization.

2805112161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103893052 (or 103893046 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 27.

The square root of 2805112161 is about 52963.3095737039. The cubic root of 2805112161 is about 1410.3170088486.

The spelling of 2805112161 in words is "two billion, eight hundred five million, one hundred twelve thousand, one hundred sixty-one".