21707413206 has 12 divisors (see below), whose sum is σ = 43415548212. Its totient is φ = 7235684104.

The previous prime is 21707413201. The next prime is 21707413313. The reversal of 21707413206 is 60231470712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21707413201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 330820 + ... + 390968.

It is an arithmetic number, because the mean of its divisors is an integer number (3617962351).

Almost surely, 2^21707413206 is an apocalyptic number.

21707413206 is an abundant number, since it is smaller than the sum of its proper divisors (21708135006).

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

21707413206 is an frugal number, since it uses more digits than its factorization.

21707413206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120303 (or 60154 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

Adding to 21707413206 its reverse (60231470712), we get a palindrome (81938883918).

The spelling of 21707413206 in words is "twenty-one billion, seven hundred seven million, four hundred thirteen thousand, two hundred six".