21603272230364 has 48 divisors (see below), whose sum is σ = 43163470861056. Its totient is φ = 9364855315200.

The previous prime is 21603272230363. The next prime is 21603272230369. The reversal of 21603272230364 is 46303227230612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21603272230363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31331222 + ... + 32013309.

It is an arithmetic number, because the mean of its divisors is an integer number (899238976272).

Almost surely, 2^{21603272230364} is an apocalyptic number.

It is an amenable number.

21603272230364 is a deficient number, since it is larger than the sum of its proper divisors (21560198630692).

21603272230364 is a wasteful number, since it uses less digits than its factorization.

21603272230364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63344906 (or 63344904 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 41.

Adding to 21603272230364 its reverse (46303227230612), we get a palindrome (67906499460976).

The spelling of 21603272230364 in words is "twenty-one trillion, six hundred three billion, two hundred seventy-two million, two hundred thirty thousand, three hundred sixty-four".