2255161643 has 24 divisors (see below), whose sum is σ = 2706393744. Its totient is φ = 1872763200.

The previous prime is 2255161631. The next prime is 2255161651. The reversal of 2255161643 is 3461615522.

It is not a de Polignac number, because 2255161643 - 2²² = 2250967339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2255161603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 194633 + ... + 205893.

It is an arithmetic number, because the mean of its divisors is an integer number (112766406).

Almost surely, 2^2255161643 is an apocalyptic number.

2255161643 is a deficient number, since it is larger than the sum of its proper divisors (451232101).

2255161643 is a wasteful number, since it uses less digits than its factorization.

2255161643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11403 (or 11396 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 2255161643 is about 47488.5422286261. The cubic root of 2255161643 is about 1311.3719563970.

The spelling of 2255161643 in words is "two billion, two hundred fifty-five million, one hundred sixty-one thousand, six hundred forty-three".