21652365530 has 16 divisors (see below), whose sum is σ = 38975934240. Its totient is φ = 8660573712.

The previous prime is 21652365529. The next prime is 21652365533. The reversal of 21652365530 is 3556325612.

It is not an unprimeable number, because it can be changed into a prime (21652365533) 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, 424541 + ... + 472799.

It is an arithmetic number, because the mean of its divisors is an integer number (2435995890).

Almost surely, 2^21652365530 is an apocalyptic number.

21652365530 is a deficient number, since it is larger than the sum of its proper divisors (17323568710).

21652365530 is a wasteful number, since it uses less digits than its factorization.

21652365530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93133.

The product of its (nonzero) digits is 162000, while the sum is 38.

The spelling of 21652365530 in words is "twenty-one billion, six hundred fifty-two million, three hundred sixty-five thousand, five hundred thirty".