2173047745 has 8 divisors (see below), whose sum is σ = 2844717120. Its totient is φ = 1580398320.

The previous prime is 2173047739. The next prime is 2173047761. The reversal of 2173047745 is 5477403712.

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

It is not a de Polignac number, because 2173047745 - 2¹⁷ = 2172916673 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2173047698 and 2173047707.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19754925 + ... + 19755034.

It is an arithmetic number, because the mean of its divisors is an integer number (355589640).

Almost surely, 2^2173047745 is an apocalyptic number.

It is an amenable number.

2173047745 is a deficient number, since it is larger than the sum of its proper divisors (671669375).

2173047745 is a wasteful number, since it uses less digits than its factorization.

2173047745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39509975.

The product of its (nonzero) digits is 164640, while the sum is 40.

The square root of 2173047745 is about 46615.9601960530. The cubic root of 2173047745 is about 1295.2584160536.

The spelling of 2173047745 in words is "two billion, one hundred seventy-three million, forty-seven thousand, seven hundred forty-five".