21570034482 has 96 divisors (see below), whose sum is σ = 50210072640. Its totient is φ = 6935258880.

The previous prime is 21570034477. The next prime is 21570034489. The reversal of 21570034482 is 28443007512.

It is a happy number.

21570034482 is a `hidden beast` number, since 2 + 1 + 570 + 0 + 3 + 4 + 4 + 82 = 666.

It is not an unprimeable number, because it can be changed into a prime (21570034489) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1767333 + ... + 1779495.

It is an arithmetic number, because the mean of its divisors is an integer number (523021590).

Almost surely, 2^21570034482 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21570034482, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25105036320).

21570034482 is an abundant number, since it is smaller than the sum of its proper divisors (28640038158).

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

21570034482 is a wasteful number, since it uses less digits than its factorization.

21570034482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12310 (or 12298 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The spelling of 21570034482 in words is "twenty-one billion, five hundred seventy million, thirty-four thousand, four hundred eighty-two".