43340340401 has 4 divisors (see below), whose sum is σ = 43787148132. Its totient is φ = 42893532672.

The previous prime is 43340340371. The next prime is 43340340437. The reversal of 43340340401 is 10404304334.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15624750001 + 27715590400 = 124999^2 + 166480^2 .

It is a cyclic number.

It is not a de Polignac number, because 43340340401 - 2²² = 43336146097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (43340340101) 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, 223403720 + ... + 223403913.

It is an arithmetic number, because the mean of its divisors is an integer number (10946787033).

Almost surely, 2^43340340401 is an apocalyptic number.

It is an amenable number.

43340340401 is a deficient number, since it is larger than the sum of its proper divisors (446807731).

43340340401 is an equidigital number, since it uses as much as digits as its factorization.

43340340401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446807730.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 43340340401 its reverse (10404304334), we get a palindrome (53744644735).

The spelling of 43340340401 in words is "forty-three billion, three hundred forty million, three hundred forty thousand, four hundred one".