21652063355 has 32 divisors (see below), whose sum is σ = 28150785600. Its totient is φ = 15892526592.

The previous prime is 21652063313. The next prime is 21652063393. The reversal of 21652063355 is 55336025612.

It is a cyclic number.

It is not a de Polignac number, because 21652063355 - 2⁶ = 21652063291 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14839616 + ... + 14841074.

It is an arithmetic number, because the mean of its divisors is an integer number (879712050).

Almost surely, 2^21652063355 is an apocalyptic number.

21652063355 is a deficient number, since it is larger than the sum of its proper divisors (6498722245).

21652063355 is a wasteful number, since it uses less digits than its factorization.

21652063355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2703.

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

Adding to 21652063355 its reverse (55336025612), we get a palindrome (76988088967).

The spelling of 21652063355 in words is "twenty-one billion, six hundred fifty-two million, sixty-three thousand, three hundred fifty-five".