21847574654932 has 12 divisors (see below), whose sum is σ = 41174275311316. Its totient is φ = 10083495994560.

The previous prime is 21847574654923. The next prime is 21847574654933. The reversal of 21847574654932 is 23945647574812.

It can be written as a sum of positive squares in 2 ways, for example, as 1420754338116 + 20426820316816 = 1191954^2 + 4519604^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21847574654933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210072833169 + ... + 210072833272.

Almost surely, 2^{21847574654932} is an apocalyptic number.

It is an amenable number.

21847574654932 is a deficient number, since it is larger than the sum of its proper divisors (19326700656384).

21847574654932 is a wasteful number, since it uses less digits than its factorization.

21847574654932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420145666458 (or 420145666456 counting only the distinct ones).

The product of its digits is 406425600, while the sum is 67.

The spelling of 21847574654932 in words is "twenty-one trillion, eight hundred forty-seven billion, five hundred seventy-four million, six hundred fifty-four thousand, nine hundred thirty-two".