21432830360 has 32 divisors (see below), whose sum is σ = 49400064000. Its totient is φ = 8364030720.

The previous prime is 21432830333. The next prime is 21432830369. The reversal of 21432830360 is 6303823412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21432830369) 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, 6532760 + ... + 6536039.

It is an arithmetic number, because the mean of its divisors is an integer number (1543752000).

Almost surely, 2^21432830360 is an apocalyptic number.

21432830360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21432830360 is an abundant number, since it is smaller than the sum of its proper divisors (27967233640).

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

21432830360 is a wasteful number, since it uses less digits than its factorization.

21432830360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13068851 (or 13068847 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The spelling of 21432830360 in words is "twenty-one billion, four hundred thirty-two million, eight hundred thirty thousand, three hundred sixty".