21602351224424 has 16 divisors (see below), whose sum is σ = 40506449059620. Its totient is φ = 10800631475200.

The previous prime is 21602351224417. The next prime is 21602351224451. The reversal of 21602351224424 is 42442215320612.

It can be written as a sum of positive squares in 2 ways, for example, as 20825806060900 + 776545163524 = 4563530^2 + 881218^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67848377 + ... + 68166024.

Almost surely, 2^{21602351224424} is an apocalyptic number.

It is an amenable number.

21602351224424 is a deficient number, since it is larger than the sum of its proper divisors (18904097835196).

21602351224424 is a wasteful number, since it uses less digits than its factorization.

21602351224424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136034260 (or 136034256 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 38.

The spelling of 21602351224424 in words is "twenty-one trillion, six hundred two billion, three hundred fifty-one million, two hundred twenty-four thousand, four hundred twenty-four".