2172435617 has 8 divisors (see below), whose sum is σ = 2451651840. Its totient is φ = 1906839760.

The previous prime is 2172435613. The next prime is 2172435631. The reversal of 2172435617 is 7165342712.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2172435617 - 2² = 2172435613 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2172435611) 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, 3404753 + ... + 3405390.

It is an arithmetic number, because the mean of its divisors is an integer number (306456480).

Almost surely, 2^2172435617 is an apocalyptic number.

It is an amenable number.

2172435617 is a deficient number, since it is larger than the sum of its proper divisors (279216223).

2172435617 is a wasteful number, since it uses less digits than its factorization.

2172435617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6810183.

The product of its digits is 70560, while the sum is 38.

The square root of 2172435617 is about 46609.3940853129. The cubic root of 2172435617 is about 1295.1367837510.

The spelling of 2172435617 in words is "two billion, one hundred seventy-two million, four hundred thirty-five thousand, six hundred seventeen".