21342351160 has 128 divisors (see below), whose sum is σ = 54679464000. Its totient is φ = 7432114176.

The previous prime is 21342351133. The next prime is 21342351161. The reversal of 21342351160 is 6115324312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21342351161) 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, 2257804 + ... + 2267236.

Almost surely, 2^21342351160 is an apocalyptic number.

21342351160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21342351160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27339732000).

21342351160 is an abundant number, since it is smaller than the sum of its proper divisors (33337112840).

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

21342351160 is a wasteful number, since it uses less digits than its factorization.

21342351160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9705 (or 9701 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 21342351160 its reverse (6115324312), we get a palindrome (27457675472).

The spelling of 21342351160 in words is "twenty-one billion, three hundred forty-two million, three hundred fifty-one thousand, one hundred sixty".