21314388468 has 24 divisors (see below), whose sum is σ = 49864806880. Its totient is φ = 7086048480.

The previous prime is 21314388457. The next prime is 21314388497. The reversal of 21314388468 is 86488341312.

It is a super-3 number, since 3×21314388468³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2338723 + ... + 2347818.

Almost surely, 2^21314388468 is an apocalyptic number.

It is an amenable number.

21314388468 is an abundant number, since it is smaller than the sum of its proper divisors (28550418412).

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

21314388468 is a wasteful number, since it uses less digits than its factorization.

21314388468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4686927 (or 4686925 counting only the distinct ones).

The product of its digits is 884736, while the sum is 48.

The spelling of 21314388468 in words is "twenty-one billion, three hundred fourteen million, three hundred eighty-eight thousand, four hundred sixty-eight".