21416205231532 has 12 divisors (see below), whose sum is σ = 38113585581960. Its totient is φ = 10526609350976.

The previous prime is 21416205231521. The next prime is 21416205231571. The reversal of 21416205231532 is 23513250261412.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21416205231491 and 21416205231500.

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 3 ways as a sum of consecutive naturals, for example, 45373315933 + ... + 45373316404.

It is an arithmetic number, because the mean of its divisors is an integer number (3176132131830).

Almost surely, 2^{21416205231532} is an apocalyptic number.

It is an amenable number.

21416205231532 is a deficient number, since it is larger than the sum of its proper divisors (16697380350428).

21416205231532 is a wasteful number, since it uses less digits than its factorization.

21416205231532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90746632400 (or 90746632398 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

Adding to 21416205231532 its reverse (23513250261412), we get a palindrome (44929455492944).

The spelling of 21416205231532 in words is "twenty-one trillion, four hundred sixteen billion, two hundred five million, two hundred thirty-one thousand, five hundred thirty-two".