21704966504 has 32 divisors (see below), whose sum is σ = 43867089000. Its totient is φ = 10008590592.

The previous prime is 21704966501. The next prime is 21704966513. The reversal of 21704966504 is 40566940712.

It can be written as a sum of positive squares in 4 ways, for example, as 4045214404 + 17659752100 = 63602^2 + 132890^2 .

It is a super-2 number, since 2×21704966504² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21704966501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21242 + ... + 209430.

Almost surely, 2^21704966504 is an apocalyptic number.

It is an amenable number.

21704966504 is an abundant number, since it is smaller than the sum of its proper divisors (22162122496).

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

21704966504 is a wasteful number, since it uses less digits than its factorization.

21704966504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189317 (or 189313 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 21704966504 in words is "twenty-one billion, seven hundred four million, nine hundred sixty-six thousand, five hundred four".