40521052443 has 4 divisors (see below), whose sum is σ = 54028069928. Its totient is φ = 27014034960.

The previous prime is 40521052417. The next prime is 40521052463. The reversal of 40521052443 is 34425012504.

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

It is not a de Polignac number, because 40521052443 - 2⁶ = 40521052379 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 40521052443.

It is not an unprimeable number, because it can be changed into a prime (40521052463) 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, 6753508738 + ... + 6753508743.

It is an arithmetic number, because the mean of its divisors is an integer number (13507017482).

Almost surely, 2^40521052443 is an apocalyptic number.

40521052443 is a deficient number, since it is larger than the sum of its proper divisors (13507017485).

40521052443 is a wasteful number, since it uses less digits than its factorization.

40521052443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13507017484.

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 40521052443 its reverse (34425012504), we get a palindrome (74946064947).

The spelling of 40521052443 in words is "forty billion, five hundred twenty-one million, fifty-two thousand, four hundred forty-three".