2881551168 has 84 divisors (see below), whose sum is σ = 8273933668. Its totient is φ = 958832640.

The previous prime is 2881551139. The next prime is 2881551173. The reversal of 2881551168 is 8611551882.

2881551168 is a `hidden beast` number, since 2 + 8 + 81 + 551 + 16 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 348643584 + 2532907584 = 18672^2 + 50328^2 .

It is a congruent number.

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, 349008 + ... + 357168.

Almost surely, 2^2881551168 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 2881551168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4136966834).

2881551168 is an abundant number, since it is smaller than the sum of its proper divisors (5392382500).

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

2881551168 is a wasteful number, since it uses less digits than its factorization.

2881551168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8792 (or 8779 counting only the distinct ones).

The product of its digits is 153600, while the sum is 45.

The square root of 2881551168 is about 53680.0816690884. The cubic root of 2881551168 is about 1423.0127083156.

The spelling of 2881551168 in words is "two billion, eight hundred eighty-one million, five hundred fifty-one thousand, one hundred sixty-eight".