21340331634024 has 128 divisors (see below), whose sum is σ = 63843649632000. Its totient is φ = 6565736385792.

The previous prime is 21340331634023. The next prime is 21340331634073. The reversal of 21340331634024 is 42043613304312.

It is a happy number.

21340331634024 is a `hidden beast` number, since 2 + 13 + 4 + 0 + 3 + 3 + 1 + 634 + 0 + 2 + 4 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21340331634024.

It is not an unprimeable number, because it can be changed into a prime (21340331634023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35976757 + ... + 36565115.

It is an arithmetic number, because the mean of its divisors is an integer number (498778512750).

Almost surely, 2^{21340331634024} is an apocalyptic number.

21340331634024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21340331634024 is an abundant number, since it is smaller than the sum of its proper divisors (42503317997976).

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

21340331634024 is a wasteful number, since it uses less digits than its factorization.

21340331634024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601304 (or 601294 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 36.

Adding to 21340331634024 its reverse (42043613304312), we get a palindrome (63383944938336).

The spelling of 21340331634024 in words is "twenty-one trillion, three hundred forty billion, three hundred thirty-one million, six hundred thirty-four thousand, twenty-four".