2173804347743 has 4 divisors (see below), whose sum is σ = 2484347826000. Its totient is φ = 1863260869488.

The previous prime is 2173804347697. The next prime is 2173804347761. The reversal of 2173804347743 is 3477434083712.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2173804347743 - 2³⁰ = 2172730605919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2173804347443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155271739118 + ... + 155271739131.

It is an arithmetic number, because the mean of its divisors is an integer number (621086956500).

Almost surely, 2^{2173804347743} is an apocalyptic number.

2173804347743 is a deficient number, since it is larger than the sum of its proper divisors (310543478257).

2173804347743 is an equidigital number, since it uses as much as digits as its factorization.

2173804347743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310543478256.

The product of its (nonzero) digits is 9483264, while the sum is 53.

The spelling of 2173804347743 in words is "two trillion, one hundred seventy-three billion, eight hundred four million, three hundred forty-seven thousand, seven hundred forty-three".