21440652360 has 64 divisors (see below), whose sum is σ = 66539966400. Its totient is φ = 5520350976.

The previous prime is 21440652347. The next prime is 21440652413. The reversal of 21440652360 is 6325604412.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3077074 + ... + 3084033.

It is an arithmetic number, because the mean of its divisors is an integer number (1039686975).

Almost surely, 2^21440652360 is an apocalyptic number.

21440652360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21440652360 is an abundant number, since it is smaller than the sum of its proper divisors (45099314040).

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

21440652360 is a wasteful number, since it uses less digits than its factorization.

21440652360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6161150 (or 6161146 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The spelling of 21440652360 in words is "twenty-one billion, four hundred forty million, six hundred fifty-two thousand, three hundred sixty".