21416424536142 has 192 divisors, whose sum is σ = 51002869982400. Its totient is φ = 6651647009280.

The previous prime is 21416424536093. The next prime is 21416424536167. The reversal of 21416424536142 is 24163542461412.

21416424536142 is a `hidden beast` number, since 2 + 1 + 4 + 1 + 6 + 4 + 24 + 5 + 3 + 614 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 268292628 + ... + 268372440.

It is an arithmetic number, because the mean of its divisors is an integer number (265639947825).

Almost surely, 2^{21416424536142} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21416424536142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25501434991200).

21416424536142 is an abundant number, since it is smaller than the sum of its proper divisors (29586445446258).

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

21416424536142 is a wasteful number, since it uses less digits than its factorization.

21416424536142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80020 (or 79961 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 45.

Adding to 21416424536142 its reverse (24163542461412), we get a palindrome (45579966997554).

The spelling of 21416424536142 in words is "twenty-one trillion, four hundred sixteen billion, four hundred twenty-four million, five hundred thirty-six thousand, one hundred forty-two".