40443221013 has 32 divisors (see below), whose sum is σ = 58261617792. Its totient is φ = 24807168000.

The previous prime is 40443220997. The next prime is 40443221047. The reversal of 40443221013 is 31012234404.

It is not a de Polignac number, because 40443221013 - 2⁴ = 40443220997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40443621013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22758381 + ... + 22760157.

It is an arithmetic number, because the mean of its divisors is an integer number (1820675556).

Almost surely, 2^40443221013 is an apocalyptic number.

It is an amenable number.

40443221013 is a deficient number, since it is larger than the sum of its proper divisors (17818396779).

40443221013 is a wasteful number, since it uses less digits than its factorization.

40443221013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3365.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 40443221013 its reverse (31012234404), we get a palindrome (71455455417).

The spelling of 40443221013 in words is "forty billion, four hundred forty-three million, two hundred twenty-one thousand, thirteen".