43340204081 has 4 divisors (see below), whose sum is σ = 43408889664. Its totient is φ = 43271518500.

The previous prime is 43340204071. The next prime is 43340204101. The reversal of 43340204081 is 18040204334.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18040204334 = 2 ⋅9020102167.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43340204081 is a prime.

It is a super-2 number, since 2×43340204081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43340204071) 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, 34341845 + ... + 34343106.

It is an arithmetic number, because the mean of its divisors is an integer number (10852222416).

Almost surely, 2^43340204081 is an apocalyptic number.

It is an amenable number.

43340204081 is a deficient number, since it is larger than the sum of its proper divisors (68685583).

43340204081 is an equidigital number, since it uses as much as digits as its factorization.

43340204081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68685582.

The product of its (nonzero) digits is 9216, while the sum is 29.

The spelling of 43340204081 in words is "forty-three billion, three hundred forty million, two hundred four thousand, eighty-one".