21532344323512 has 48 divisors (see below), whose sum is σ = 44408817306000. Its totient is φ = 9780432604800.

The previous prime is 21532344323491. The next prime is 21532344323543.

21532344323512 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6595789 + ... + 9304252.

It is an arithmetic number, because the mean of its divisors is an integer number (925183693875).

Almost surely, 2^{21532344323512} is an apocalyptic number.

21532344323512 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21532344323512 is an abundant number, since it is smaller than the sum of its proper divisors (22876472982488).

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

21532344323512 is a wasteful number, since it uses less digits than its factorization.

21532344323512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15901468 (or 15901453 counting only the distinct ones).

The product of its digits is 518400, while the sum is 40.

It can be divided in two parts, 2153234 and 4323512, that added together give a palindrome (6476746).

The spelling of 21532344323512 in words is "twenty-one trillion, five hundred thirty-two billion, three hundred forty-four million, three hundred twenty-three thousand, five hundred twelve".