21713314744 has 64 divisors (see below), whose sum is σ = 45487031040. Its totient is φ = 9631560960.

The previous prime is 21713314729. The next prime is 21713314747. The reversal of 21713314744 is 44741331712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21713314747) 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, 6268357 + ... + 6271819.

It is an arithmetic number, because the mean of its divisors is an integer number (710734860).

Almost surely, 2^21713314744 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 21713314744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22743515520).

21713314744 is an abundant number, since it is smaller than the sum of its proper divisors (23773716296).

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

21713314744 is a wasteful number, since it uses less digits than its factorization.

21713314744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5180 (or 5176 counting only the distinct ones).

The product of its digits is 56448, while the sum is 37.

The spelling of 21713314744 in words is "twenty-one billion, seven hundred thirteen million, three hundred fourteen thousand, seven hundred forty-four".