21004702846504 has 64 divisors (see below), whose sum is σ = 44280963820800. Its totient is φ = 9268042139136.

The previous prime is 21004702846459. The next prime is 21004702846513. The reversal of 21004702846504 is 40564820740012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2157892 + ... + 6831244.

It is an arithmetic number, because the mean of its divisors is an integer number (691890059700).

Almost surely, 2^{21004702846504} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21004702846504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22140481910400).

21004702846504 is an abundant number, since it is smaller than the sum of its proper divisors (23276260974296).

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

21004702846504 is a wasteful number, since it uses less digits than its factorization.

21004702846504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4675274 (or 4675270 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 43.

The spelling of 21004702846504 in words is "twenty-one trillion, four billion, seven hundred two million, eight hundred forty-six thousand, five hundred four".