21613241127144 has 16 divisors (see below), whose sum is σ = 54033102817920. Its totient is φ = 7204413709040.

The previous prime is 21613241127073. The next prime is 21613241127157. The reversal of 21613241127144 is 44172114231612.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 450275856792 + ... + 450275856839.

It is an arithmetic number, because the mean of its divisors is an integer number (3377068926120).

Almost surely, 2^{21613241127144} is an apocalyptic number.

21613241127144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21613241127144 is an abundant number, since it is smaller than the sum of its proper divisors (32419861690776).

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

21613241127144 is a wasteful number, since it uses less digits than its factorization.

21613241127144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900551713640 (or 900551713636 counting only the distinct ones).

The product of its digits is 64512, while the sum is 39.

Adding to 21613241127144 its reverse (44172114231612), we get a palindrome (65785355358756).

The spelling of 21613241127144 in words is "twenty-one trillion, six hundred thirteen billion, two hundred forty-one million, one hundred twenty-seven thousand, one hundred forty-four".