40015234443 has 4 divisors (see below), whose sum is σ = 53353645928. Its totient is φ = 26676822960.

The previous prime is 40015234433. The next prime is 40015234463. The reversal of 40015234443 is 34443251004.

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

It is not a de Polignac number, because 40015234443 - 2⁶ = 40015234379 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40015234443.

It is not an unprimeable number, because it can be changed into a prime (40015234433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6669205738 + ... + 6669205743.

It is an arithmetic number, because the mean of its divisors is an integer number (13338411482).

Almost surely, 2^40015234443 is an apocalyptic number.

40015234443 is a deficient number, since it is larger than the sum of its proper divisors (13338411485).

40015234443 is a wasteful number, since it uses less digits than its factorization.

40015234443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13338411484.

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 40015234443 its reverse (34443251004), we get a palindrome (74458485447).

The spelling of 40015234443 in words is "forty billion, fifteen million, two hundred thirty-four thousand, four hundred forty-three".