21663162041232 has 40 divisors (see below), whose sum is σ = 56637423660384. Its totient is φ = 7134053361664.

The previous prime is 21663162041221. The next prime is 21663162041263. The reversal of 21663162041232 is 23214026136612.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2718766353 + ... + 2718774320.

Almost surely, 2^{21663162041232} is an apocalyptic number.

It is an amenable number.

21663162041232 is an abundant number, since it is smaller than the sum of its proper divisors (34974261619152).

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

21663162041232 is a wasteful number, since it uses less digits than its factorization.

21663162041232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5437540767 (or 5437540761 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 39.

Adding to 21663162041232 its reverse (23214026136612), we get a palindrome (44877188177844).

The spelling of 21663162041232 in words is "twenty-one trillion, six hundred sixty-three billion, one hundred sixty-two million, forty-one thousand, two hundred thirty-two".