21652311364355 has 24 divisors (see below), whose sum is σ = 30237511624560. Its totient is φ = 14841083960640.

The previous prime is 21652311364337. The next prime is 21652311364447. The reversal of 21652311364355 is 55346311325612.

It is not a de Polignac number, because 21652311364355 - 2⁶ = 21652311364291 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17911301 + ... + 19081910.

It is an arithmetic number, because the mean of its divisors is an integer number (1259896317690).

Almost surely, 2^{21652311364355} is an apocalyptic number.

21652311364355 is a deficient number, since it is larger than the sum of its proper divisors (8585200260205).

21652311364355 is a wasteful number, since it uses less digits than its factorization.

21652311364355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36995619 (or 36995612 counting only the distinct ones).

The product of its digits is 1944000, while the sum is 47.

Adding to 21652311364355 its reverse (55346311325612), we get a palindrome (76998622689967).

The spelling of 21652311364355 in words is "twenty-one trillion, six hundred fifty-two billion, three hundred eleven million, three hundred sixty-four thousand, three hundred fifty-five".