2172232587309 has 16 divisors (see below), whose sum is σ = 3051131289600. Its totient is φ = 1370863661616.

The previous prime is 2172232587307. The next prime is 2172232587319. The reversal of 2172232587309 is 9037852322712.

It is not a de Polignac number, because 2172232587309 - 2¹ = 2172232587307 is a prime.

It is a super-2 number, since 2×2172232587309² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172232587307) 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, 14825199 + ... + 14971004.

It is an arithmetic number, because the mean of its divisors is an integer number (190695705600).

Almost surely, 2^{2172232587309} is an apocalyptic number.

It is an amenable number.

2172232587309 is a deficient number, since it is larger than the sum of its proper divisors (878898702291).

2172232587309 is a wasteful number, since it uses less digits than its factorization.

2172232587309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29797504.

The product of its (nonzero) digits is 2540160, while the sum is 51.

The spelling of 2172232587309 in words is "two trillion, one hundred seventy-two billion, two hundred thirty-two million, five hundred eighty-seven thousand, three hundred nine".