20344503420144 has 80 divisors (see below), whose sum is σ = 58397874796800. Its totient is φ = 6781313594304.

The previous prime is 20344503420139. The next prime is 20344503420161. The reversal of 20344503420144 is 44102430544302.

20344503420144 is a `hidden beast` number, since 2 + 0 + 3 + 4 + 4 + 503 + 4 + 2 + 0 + 144 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 20344503420099 and 20344503420108.

It is a congruent number.

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, 15447747 + ... + 16712925.

It is an arithmetic number, because the mean of its divisors is an integer number (729973434960).

Almost surely, 2^{20344503420144} is an apocalyptic number.

20344503420144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20344503420144 is an abundant number, since it is smaller than the sum of its proper divisors (38053371376656).

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

20344503420144 is a wasteful number, since it uses less digits than its factorization.

20344503420144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302419 (or 1302407 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 36.

Adding to 20344503420144 its reverse (44102430544302), we get a palindrome (64446933964446).

The spelling of 20344503420144 in words is "twenty trillion, three hundred forty-four billion, five hundred three million, four hundred twenty thousand, one hundred forty-four".