2171134345 has 16 divisors (see below), whose sum is σ = 2759745168. Its totient is φ = 1634068480.

The previous prime is 2171134331. The next prime is 2171134367. The reversal of 2171134345 is 5434311712.

It can be written as a sum of positive squares in 8 ways, for example, as 498896896 + 1672237449 = 22336^2 + 40893^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2171134345 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 329685 + ... + 336205.

It is an arithmetic number, because the mean of its divisors is an integer number (172484073).

Almost surely, 2^2171134345 is an apocalyptic number.

It is an amenable number.

2171134345 is a deficient number, since it is larger than the sum of its proper divisors (588610823).

2171134345 is a wasteful number, since it uses less digits than its factorization.

2171134345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10460.

The product of its digits is 10080, while the sum is 31.

The square root of 2171134345 is about 46595.4326624402. The cubic root of 2171134345 is about 1294.8781398230.

The spelling of 2171134345 in words is "two billion, one hundred seventy-one million, one hundred thirty-four thousand, three hundred forty-five".