2175132377889 has 9 divisors (see below), whose sum is σ = 3141864270129. Its totient is φ = 1450085302260.

The previous prime is 2175132377867. The next prime is 2175132377893. The reversal of 2175132377889 is 9887732315712.

It is a happy number.

The square root of 2175132377889 is 1474833.

It is a perfect power (a square), and thus also a powerful number.

2175132377889 is a `hidden beast` number, since 2 + 1 + 7 + 513 + 2 + 37 + 7 + 8 + 89 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 2175132377889 - 2¹⁷ = 2175132246817 is a prime.

It is a super-2 number, since 2×2175132377889² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2175132377989) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4178694 + ... + 4670304.

Almost surely, 2^{2175132377889} is an apocalyptic number.

2175132377889 is the 1474833-rd square number.

2175132377889 is the 737417-th centered octagonal number.

It is an amenable number.

2175132377889 is a deficient number, since it is larger than the sum of its proper divisors (966731892240).

2175132377889 is an frugal number, since it uses more digits than its factorization.

2175132377889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983228 (or 491614 counting only the distinct ones).

The product of its digits is 35562240, while the sum is 63.

The spelling of 2175132377889 in words is "two trillion, one hundred seventy-five billion, one hundred thirty-two million, three hundred seventy-seven thousand, eight hundred eighty-nine".