21230854608 has 40 divisors (see below), whose sum is σ = 54959055808. Its totient is φ = 7062412032.

The previous prime is 21230854537. The next prime is 21230854613. The reversal of 21230854608 is 80645803212.

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, 430741 + ... + 477492.

Almost surely, 2^21230854608 is an apocalyptic number.

It is an amenable number.

21230854608 is an abundant number, since it is smaller than the sum of its proper divisors (33728201200).

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

21230854608 is a wasteful number, since it uses less digits than its factorization.

21230854608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908731 (or 908725 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The spelling of 21230854608 in words is "twenty-one billion, two hundred thirty million, eight hundred fifty-four thousand, six hundred eight".