20042400442244 has 24 divisors (see below), whose sum is σ = 36343290643968. Its totient is φ = 9661061401920.

The previous prime is 20042400442201. The next prime is 20042400442247. The reversal of 20042400442244 is 44224400424002.

It is a self number, because there is not a number n which added to its sum of digits gives 20042400442244.

It is not an unprimeable number, because it can be changed into a prime (20042400442247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307253057 + ... + 307318280.

It is an arithmetic number, because the mean of its divisors is an integer number (1514303776832).

Almost surely, 2^{20042400442244} is an apocalyptic number.

It is an amenable number.

20042400442244 is a deficient number, since it is larger than the sum of its proper divisors (16300890201724).

20042400442244 is a wasteful number, since it uses less digits than its factorization.

20042400442244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614571635 (or 614571633 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 32.

Adding to 20042400442244 its reverse (44224400424002), we get a palindrome (64266800866246).

The spelling of 20042400442244 in words is "twenty trillion, forty-two billion, four hundred million, four hundred forty-two thousand, two hundred forty-four".