21265424713 has 8 divisors (see below), whose sum is σ = 23065985600. Its totient is φ = 19488400848.

The previous prime is 21265424707. The next prime is 21265424731. The reversal of 21265424713 is 31742456212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21265424713 - 2⁵ = 21265424681 is a prime.

It is a super-2 number, since 2×21265424713² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21265424753) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5882373 + ... + 5885986.

It is an arithmetic number, because the mean of its divisors is an integer number (2883248200).

Almost surely, 2^21265424713 is an apocalyptic number.

It is an amenable number.

21265424713 is a deficient number, since it is larger than the sum of its proper divisors (1800560887).

21265424713 is a wasteful number, since it uses less digits than its factorization.

21265424713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11768511.

The product of its digits is 80640, while the sum is 37.

The spelling of 21265424713 in words is "twenty-one billion, two hundred sixty-five million, four hundred twenty-four thousand, seven hundred thirteen".