40400240043 has 4 divisors (see below), whose sum is σ = 53866986728. Its totient is φ = 26933493360.

The previous prime is 40400240021. The next prime is 40400240057. The reversal of 40400240043 is 34004200404.

40400240043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 40400240043 - 2²⁰ = 40399191467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40400240003) 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, 6733373338 + ... + 6733373343.

It is an arithmetic number, because the mean of its divisors is an integer number (13466746682).

Almost surely, 2^40400240043 is an apocalyptic number.

40400240043 is a deficient number, since it is larger than the sum of its proper divisors (13466746685).

40400240043 is a wasteful number, since it uses less digits than its factorization.

40400240043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13466746684.

The product of its (nonzero) digits is 1536, while the sum is 21.

Adding to 40400240043 its reverse (34004200404), we get a palindrome (74404440447).

The spelling of 40400240043 in words is "forty billion, four hundred million, two hundred forty thousand, forty-three".