2172439444863 has 8 divisors (see below), whose sum is σ = 2896628830848. Its totient is φ = 1448271511064.

The previous prime is 2172439444859. The next prime is 2172439444871. The reversal of 2172439444863 is 3684449342712.

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 2172439444863 - 2² = 2172439444859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172439442863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5125245 + ... + 5532902.

It is an arithmetic number, because the mean of its divisors is an integer number (362078603856).

Almost surely, 2^{2172439444863} is an apocalyptic number.

2172439444863 is a deficient number, since it is larger than the sum of its proper divisors (724189385985).

2172439444863 is a wasteful number, since it uses less digits than its factorization.

2172439444863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10726093.

The product of its digits is 27869184, while the sum is 57.

The spelling of 2172439444863 in words is "two trillion, one hundred seventy-two billion, four hundred thirty-nine million, four hundred forty-four thousand, eight hundred sixty-three".