21616025633452 has 24 divisors (see below), whose sum is σ = 37839847862096. Its totient is φ = 10804640917248.

The previous prime is 21616025633443. The next prime is 21616025633509. The reversal of 21616025633452 is 25433652061612.

It is a super-2 number, since 2×21616025633452² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286635583 + ... + 286710985.

Almost surely, 2^{21616025633452} is an apocalyptic number.

It is an amenable number.

21616025633452 is a deficient number, since it is larger than the sum of its proper divisors (16223822228644).

21616025633452 is a wasteful number, since it uses less digits than its factorization.

21616025633452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96817 (or 96815 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 46.

The spelling of 21616025633452 in words is "twenty-one trillion, six hundred sixteen billion, twenty-five million, six hundred thirty-three thousand, four hundred fifty-two".