21341035031680 has 256 divisors, whose sum is σ = 63025364908800. Its totient is φ = 6728972746752.

The previous prime is 21341035031669. The next prime is 21341035031699. The reversal of 21341035031680 is 8613053014312.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14985459 + ... + 16347661.

It is an arithmetic number, because the mean of its divisors is an integer number (246192831675).

Almost surely, 2^{21341035031680} is an apocalyptic number.

21341035031680 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 21341035031680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31512682454400).

21341035031680 is an abundant number, since it is smaller than the sum of its proper divisors (41684329877120).

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

21341035031680 is a wasteful number, since it uses less digits than its factorization.

21341035031680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362511 (or 1362499 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

Adding to 21341035031680 its reverse (8613053014312), we get a palindrome (29954088045992).

The spelling of 21341035031680 in words is "twenty-one trillion, three hundred forty-one billion, thirty-five million, thirty-one thousand, six hundred eighty".