18743709911343 has 4 divisors (see below), whose sum is σ = 24991613215128. Its totient is φ = 12495806607560.

The previous prime is 18743709911279. The next prime is 18743709911491. The reversal of 18743709911343 is 34311990734781.

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 18743709911343 - 2⁶ = 18743709911279 is a prime.

It is a super-2 number, since 2×18743709911343² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18743709918343) 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, 3123951651888 + ... + 3123951651893.

It is an arithmetic number, because the mean of its divisors is an integer number (6247903303782).

Almost surely, 2^{18743709911343} is an apocalyptic number.

18743709911343 is a deficient number, since it is larger than the sum of its proper divisors (6247903303785).

18743709911343 is an equidigital number, since it uses as much as digits as its factorization.

18743709911343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6247903303784.

The product of its (nonzero) digits is 13716864, while the sum is 60.

The spelling of 18743709911343 in words is "eighteen trillion, seven hundred forty-three billion, seven hundred nine million, nine hundred eleven thousand, three hundred forty-three".