21472803453364 has 24 divisors (see below), whose sum is σ = 39798073050120. Its totient is φ = 10102250244096.

The previous prime is 21472803453331. The next prime is 21472803453389. The reversal of 21472803453364 is 46335430827412.

It can be written as a sum of positive squares in 4 ways, for example, as 14203039390864 + 7269764062500 = 3768692^2 + 2696250^2 .

It is a super-2 number, since 2×21472803453364² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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, 40334227 + ... + 40863130.

It is an arithmetic number, because the mean of its divisors is an integer number (1658253043755).

Almost surely, 2^{21472803453364} is an apocalyptic number.

It is an amenable number.

21472803453364 is a deficient number, since it is larger than the sum of its proper divisors (18325269596756).

21472803453364 is a wasteful number, since it uses less digits than its factorization.

21472803453364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81201267 (or 81201265 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 52.

The spelling of 21472803453364 in words is "twenty-one trillion, four hundred seventy-two billion, eight hundred three million, four hundred fifty-three thousand, three hundred sixty-four".