20004421435144 has 32 divisors (see below), whose sum is σ = 37536685243200. Its totient is φ = 9994639515840.

The previous prime is 20004421435127. The next prime is 20004421435217. The reversal of 20004421435144 is 44153412440002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257992909 + ... + 258070435.

It is an arithmetic number, because the mean of its divisors is an integer number (1173021413850).

Almost surely, 2^{20004421435144} is an apocalyptic number.

It is an amenable number.

20004421435144 is a deficient number, since it is larger than the sum of its proper divisors (17532263808056).

20004421435144 is a wasteful number, since it uses less digits than its factorization.

20004421435144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101533 (or 101529 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 34.

Adding to 20004421435144 its reverse (44153412440002), we get a palindrome (64157833875146).

The spelling of 20004421435144 in words is "twenty trillion, four billion, four hundred twenty-one million, four hundred thirty-five thousand, one hundred forty-four".