21342275532 has 36 divisors (see below), whose sum is σ = 54966431520. Its totient is φ = 6979863072.

The previous prime is 21342275503. The next prime is 21342275567. The reversal of 21342275532 is 23557224312.

21342275532 is a `hidden beast` number, since 2 + 1 + 34 + 22 + 75 + 532 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5590932 + ... + 5594747.

It is an arithmetic number, because the mean of its divisors is an integer number (1526845320).

Almost surely, 2^21342275532 is an apocalyptic number.

It is an amenable number.

21342275532 is an abundant number, since it is smaller than the sum of its proper divisors (33624155988).

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

21342275532 is a wasteful number, since it uses less digits than its factorization.

21342275532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11185742 (or 11185737 counting only the distinct ones).

The product of its digits is 100800, while the sum is 36.

Adding to 21342275532 its reverse (23557224312), we get a palindrome (44899499844).

The spelling of 21342275532 in words is "twenty-one billion, three hundred forty-two million, two hundred seventy-five thousand, five hundred thirty-two".