40545231443 has 4 divisors (see below), whose sum is σ = 40605121680. Its totient is φ = 40485341208.

The previous prime is 40545231407. The next prime is 40545231481. The reversal of 40545231443 is 34413254504.

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 40545231443 - 2⁶ = 40545231379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40545231043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29944103 + ... + 29945456.

It is an arithmetic number, because the mean of its divisors is an integer number (10151280420).

Almost surely, 2^40545231443 is an apocalyptic number.

40545231443 is a deficient number, since it is larger than the sum of its proper divisors (59890237).

40545231443 is an equidigital number, since it uses as much as digits as its factorization.

40545231443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59890236.

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 40545231443 its reverse (34413254504), we get a palindrome (74958485947).

The spelling of 40545231443 in words is "forty billion, five hundred forty-five million, two hundred thirty-one thousand, four hundred forty-three".