21652432464245 has 48 divisors (see below), whose sum is σ = 28875476937216. Its totient is φ = 15573539520000.

The previous prime is 21652432464211. The next prime is 21652432464251. The reversal of 21652432464245 is 54246423425612.

It is not a de Polignac number, because 21652432464245 - 2¹⁸ = 21652432202101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21652432464193 and 21652432464202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46567229 + ... + 47029901.

It is an arithmetic number, because the mean of its divisors is an integer number (601572436192).

Almost surely, 2^{21652432464245} is an apocalyptic number.

It is an amenable number.

21652432464245 is a deficient number, since it is larger than the sum of its proper divisors (7223044472971).

21652432464245 is a wasteful number, since it uses less digits than its factorization.

21652432464245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463554 (or 463543 counting only the distinct ones).

The product of its digits is 11059200, while the sum is 50.

Adding to 21652432464245 its reverse (54246423425612), we get a palindrome (75898855889857).

The spelling of 21652432464245 in words is "twenty-one trillion, six hundred fifty-two billion, four hundred thirty-two million, four hundred sixty-four thousand, two hundred forty-five".