21153843364232 has 16 divisors (see below), whose sum is σ = 41387954408640. Its totient is φ = 10117055521936.

The previous prime is 21153843364109. The next prime is 21153843364237. The reversal of 21153843364232 is 23246334835112.

It is a super-3 number, since 3×21153843364232³ (a number of 41 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21153843364237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57483269828 + ... + 57483270195.

It is an arithmetic number, because the mean of its divisors is an integer number (2586747150540).

Almost surely, 2^{21153843364232} is an apocalyptic number.

It is an amenable number.

21153843364232 is a deficient number, since it is larger than the sum of its proper divisors (20234111044408).

21153843364232 is a wasteful number, since it uses less digits than its factorization.

21153843364232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114966540052 (or 114966540048 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 47.

The spelling of 21153843364232 in words is "twenty-one trillion, one hundred fifty-three billion, eight hundred forty-three million, three hundred sixty-four thousand, two hundred thirty-two".