21467755460672 has 28 divisors (see below), whose sum is σ = 43403852291436. Its totient is φ = 10531351733760.

The previous prime is 21467755460663. The next prime is 21467755460689. The reversal of 21467755460672 is 27606455776412.

21467755460672 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 19554225504256 + 1913529956416 = 4422016^2 + 1383304^2 .

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, 3164465279 + ... + 3164472062.

It is an arithmetic number, because the mean of its divisors is an integer number (1550137581837).

Almost surely, 2^{21467755460672} is an apocalyptic number.

It is an amenable number.

21467755460672 is an abundant number, since it is smaller than the sum of its proper divisors (21936096830764).

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

21467755460672 is an equidigital number, since it uses as much as digits as its factorization.

21467755460672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6328937406 (or 6328937396 counting only the distinct ones).

The product of its (nonzero) digits is 118540800, while the sum is 62.

The spelling of 21467755460672 in words is "twenty-one trillion, four hundred sixty-seven billion, seven hundred fifty-five million, four hundred sixty thousand, six hundred seventy-two".