2171437617 has 16 divisors (see below), whose sum is σ = 2932856640. Its totient is φ = 1428854592.

The previous prime is 2171437603. The next prime is 2171437649. The reversal of 2171437617 is 7167341712.

It is not a de Polignac number, because 2171437617 - 2⁴ = 2171437601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2171437717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 314559 + ... + 321387.

It is an arithmetic number, because the mean of its divisors is an integer number (183303540).

Almost surely, 2^2171437617 is an apocalyptic number.

It is an amenable number.

2171437617 is a deficient number, since it is larger than the sum of its proper divisors (761419023).

2171437617 is a wasteful number, since it uses less digits than its factorization.

2171437617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8192.

The product of its digits is 49392, while the sum is 39.

The square root of 2171437617 is about 46598.6868591809. The cubic root of 2171437617 is about 1294.9384281236.

The spelling of 2171437617 in words is "two billion, one hundred seventy-one million, four hundred thirty-seven thousand, six hundred seventeen".