40513220443 has 2 divisors, whose sum is σ = 40513220444. Its totient is φ = 40513220442.

The previous prime is 40513220437. The next prime is 40513220467. The reversal of 40513220443 is 34402231504.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40513220443 - 2²⁹ = 39976349531 is a prime.

It is a super-2 number, since 2×40513220443² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40513220413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20256610221 + 20256610222.

It is an arithmetic number, because the mean of its divisors is an integer number (20256610222).

Almost surely, 2^40513220443 is an apocalyptic number.

40513220443 is a deficient number, since it is larger than the sum of its proper divisors (1).

40513220443 is an equidigital number, since it uses as much as digits as its factorization.

40513220443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 40513220443 its reverse (34402231504), we get a palindrome (74915451947).

The spelling of 40513220443 in words is "forty billion, five hundred thirteen million, two hundred twenty thousand, four hundred forty-three".