40043220244 has 12 divisors (see below), whose sum is σ = 70283577364. Its totient is φ = 19962198144.

The previous prime is 40043220209. The next prime is 40043220251. The reversal of 40043220244 is 44202234004.

It can be written as a sum of positive squares in 2 ways, for example, as 16996336900 + 23046883344 = 130370^2 + 151812^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14851479 + ... + 14854174.

Almost surely, 2^40043220244 is an apocalyptic number.

It is an amenable number.

40043220244 is a deficient number, since it is larger than the sum of its proper divisors (30240357120).

40043220244 is a wasteful number, since it uses less digits than its factorization.

40043220244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29705994 (or 29705992 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

Adding to 40043220244 its reverse (44202234004), we get a palindrome (84245454248).

The spelling of 40043220244 in words is "forty billion, forty-three million, two hundred twenty thousand, two hundred forty-four".