21714456016 has 80 divisors (see below), whose sum is σ = 46533896640. Its totient is φ = 9733570560.

The previous prime is 21714456011. The next prime is 21714456017. The reversal of 21714456016 is 61065441712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21714456011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11232586 + ... + 11234518.

It is an arithmetic number, because the mean of its divisors is an integer number (581673708).

Almost surely, 2^21714456016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21714456016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23266948320).

21714456016 is an abundant number, since it is smaller than the sum of its proper divisors (24819440624).

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

21714456016 is a wasteful number, since it uses less digits than its factorization.

21714456016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2804 (or 2798 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

Adding to 21714456016 its reverse (61065441712), we get a palindrome (82779897728).

The spelling of 21714456016 in words is "twenty-one billion, seven hundred fourteen million, four hundred fifty-six thousand, sixteen".