21113161660632 has 16 divisors (see below), whose sum is σ = 52782904151640. Its totient is φ = 7037720553536.

The previous prime is 21113161660631. The next prime is 21113161660667. The reversal of 21113161660632 is 23606616131112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113161660631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 439857534573 + ... + 439857534620.

Almost surely, 2^{21113161660632} is an apocalyptic number.

It is an amenable number.

21113161660632 is an abundant number, since it is smaller than the sum of its proper divisors (31669742491008).

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

21113161660632 is a wasteful number, since it uses less digits than its factorization.

21113161660632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879715069202 (or 879715069198 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

Adding to 21113161660632 its reverse (23606616131112), we get a palindrome (44719777791744).

The spelling of 21113161660632 in words is "twenty-one trillion, one hundred thirteen billion, one hundred sixty-one million, six hundred sixty thousand, six hundred thirty-two".