40011443421 has 4 divisors (see below), whose sum is σ = 53348591232. Its totient is φ = 26674295612.

The previous prime is 40011443401. The next prime is 40011443453. The reversal of 40011443421 is 12434411004.

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.

It is a cyclic number.

It is not a de Polignac number, because 40011443421 - 2⁹ = 40011442909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40011443391 and 40011443400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40011443401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6668573901 + ... + 6668573906.

It is an arithmetic number, because the mean of its divisors is an integer number (13337147808).

Almost surely, 2^40011443421 is an apocalyptic number.

It is an amenable number.

40011443421 is a deficient number, since it is larger than the sum of its proper divisors (13337147811).

40011443421 is a wasteful number, since it uses less digits than its factorization.

40011443421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13337147810.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 40011443421 its reverse (12434411004), we get a palindrome (52445854425).

The spelling of 40011443421 in words is "forty billion, eleven million, four hundred forty-three thousand, four hundred twenty-one".