20444040442 has 32 divisors (see below), whose sum is σ = 35476729344. Its totient is φ = 8654688000.

The previous prime is 20444040437. The next prime is 20444040467. The reversal of 20444040442 is 24404044402.

It is a self number, because there is not a number n which added to its sum of digits gives 20444040442.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 595567 + ... + 628957.

It is an arithmetic number, because the mean of its divisors is an integer number (1108647792).

Almost surely, 2^20444040442 is an apocalyptic number.

20444040442 is a deficient number, since it is larger than the sum of its proper divisors (15032688902).

20444040442 is a wasteful number, since it uses less digits than its factorization.

20444040442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33934.

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 20444040442 its reverse (24404044402), we get a palindrome (44848084844).

The spelling of 20444040442 in words is "twenty billion, four hundred forty-four million, forty thousand, four hundred forty-two".