21424275468 has 60 divisors (see below), whose sum is σ = 56029964760. Its totient is φ = 7138533888.

The previous prime is 21424275419. The next prime is 21424275547. The reversal of 21424275468 is 86457242412.

21424275468 is a `hidden beast` number, since 2 + 142 + 42 + 7 + 5 + 468 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 879963 + ... + 903981.

It is an arithmetic number, because the mean of its divisors is an integer number (933832746).

Almost surely, 2^21424275468 is an apocalyptic number.

It is an amenable number.

21424275468 is an abundant number, since it is smaller than the sum of its proper divisors (34605689292).

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

21424275468 is a wasteful number, since it uses less digits than its factorization.

21424275468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26788 (or 26777 counting only the distinct ones).

The product of its digits is 860160, while the sum is 45.

The spelling of 21424275468 in words is "twenty-one billion, four hundred twenty-four million, two hundred seventy-five thousand, four hundred sixty-eight".