21467468268756 has 36 divisors (see below), whose sum is σ = 54284874052500. Its totient is φ = 7153200582528.

The previous prime is 21467468268733. The next prime is 21467468268839. The reversal of 21467468268756 is 65786286476412.

21467468268756 is a `hidden beast` number, since 2 + 1 + 4 + 67 + 468 + 26 + 87 + 5 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 21252413481156 + 215054787600 = 4610034^2 + 463740^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109157631 + ... + 109354118.

It is an arithmetic number, because the mean of its divisors is an integer number (1507913168125).

Almost surely, 2^{21467468268756} is an apocalyptic number.

It is an amenable number.

21467468268756 is an abundant number, since it is smaller than the sum of its proper divisors (32817405783744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21467468268756 is a wasteful number, since it uses less digits than its factorization.

21467468268756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218514488 (or 218514483 counting only the distinct ones).

The product of its digits is 1300561920, while the sum is 72.

The spelling of 21467468268756 in words is "twenty-one trillion, four hundred sixty-seven billion, four hundred sixty-eight million, two hundred sixty-eight thousand, seven hundred fifty-six".