43420404011 has 4 divisors (see below), whose sum is σ = 43446452712. Its totient is φ = 43394355312.

The previous prime is 43420403989. The next prime is 43420404023. The reversal of 43420404011 is 11040402434.

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 43420404011 - 2²⁶ = 43353295147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43420464011) 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, 13021850 + ... + 13025183.

It is an arithmetic number, because the mean of its divisors is an integer number (10861613178).

Almost surely, 2^43420404011 is an apocalyptic number.

43420404011 is a deficient number, since it is larger than the sum of its proper divisors (26048701).

43420404011 is a wasteful number, since it uses less digits than its factorization.

43420404011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26048700.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 43420404011 its reverse (11040402434), we get a palindrome (54460806445).

The spelling of 43420404011 in words is "forty-three billion, four hundred twenty million, four hundred four thousand, eleven".