21317459367 has 36 divisors (see below), whose sum is σ = 29695006392. Its totient is φ = 13599180000.

The previous prime is 21317459323. The next prime is 21317459377. The reversal of 21317459367 is 76395471312.

It is a happy number.

It is not a de Polignac number, because 21317459367 - 2¹⁰ = 21317458343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21317459377) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 84929992 + ... + 84930242.

Almost surely, 2^21317459367 is an apocalyptic number.

21317459367 is a deficient number, since it is larger than the sum of its proper divisors (8377547025).

21317459367 is an frugal number, since it uses more digits than its factorization.

21317459367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652 (or 358 counting only the distinct ones).

The product of its digits is 952560, while the sum is 48.

The spelling of 21317459367 in words is "twenty-one billion, three hundred seventeen million, four hundred fifty-nine thousand, three hundred sixty-seven".