43253823823 has 4 divisors (see below), whose sum is σ = 49432941520. Its totient is φ = 37074706128.

The previous prime is 43253823787. The next prime is 43253823829. The reversal of 43253823823 is 32832835234.

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 43253823823 - 2²⁹ = 42716952911 is a prime.

It is a super-2 number, since 2×43253823823² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43253823823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43253823829) 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, 3089558838 + ... + 3089558851.

It is an arithmetic number, because the mean of its divisors is an integer number (12358235380).

Almost surely, 2^43253823823 is an apocalyptic number.

43253823823 is a deficient number, since it is larger than the sum of its proper divisors (6179117697).

43253823823 is an equidigital number, since it uses as much as digits as its factorization.

43253823823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6179117696.

The product of its digits is 829440, while the sum is 43.

The spelling of 43253823823 in words is "forty-three billion, two hundred fifty-three million, eight hundred twenty-three thousand, eight hundred twenty-three".