21470594824 has 64 divisors (see below), whose sum is σ = 46862150400. Its totient is φ = 9032083200.

The previous prime is 21470594819. The next prime is 21470594867. The reversal of 21470594824 is 42849507412.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 898714 + ... + 922294.

It is an arithmetic number, because the mean of its divisors is an integer number (732221100).

Almost surely, 2^21470594824 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 21470594824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23431075200).

21470594824 is an abundant number, since it is smaller than the sum of its proper divisors (25391555576).

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

21470594824 is a wasteful number, since it uses less digits than its factorization.

21470594824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23894 (or 23890 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 21470594824 in words is "twenty-one billion, four hundred seventy million, five hundred ninety-four thousand, eight hundred twenty-four".