20040444322400 has 72 divisors (see below), whose sum is σ = 49356688329144. Its totient is φ = 7945238067200.

The previous prime is 20040444322361. The next prime is 20040444322411. The reversal of 20040444322400 is 422344404002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110752766 + ... + 110933565.

It is an arithmetic number, because the mean of its divisors is an integer number (685509560127).

Almost surely, 2^{20040444322400} is an apocalyptic number.

20040444322400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20040444322400 is an abundant number, since it is smaller than the sum of its proper divisors (29316244006744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20040444322400 is a wasteful number, since it uses less digits than its factorization.

20040444322400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221686464 (or 221686451 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 29.

Adding to 20040444322400 its reverse (422344404002), we get a palindrome (20462788726402).

The spelling of 20040444322400 in words is "twenty trillion, forty billion, four hundred forty-four million, three hundred twenty-two thousand, four hundred".