21755632022616 has 64 divisors (see below), whose sum is σ = 54575559118080. Its totient is φ = 7227021536640.

The previous prime is 21755632022609. The next prime is 21755632022617. The reversal of 21755632022616 is 61622023655712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21755632022617) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 43421046 + ... + 43919226.

It is an arithmetic number, because the mean of its divisors is an integer number (852743111220).

Almost surely, 2^{21755632022616} is an apocalyptic number.

It is an amenable number.

21755632022616 is an abundant number, since it is smaller than the sum of its proper divisors (32819927095464).

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

21755632022616 is a wasteful number, since it uses less digits than its factorization.

21755632022616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504424 (or 504420 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 48.

The spelling of 21755632022616 in words is "twenty-one trillion, seven hundred fifty-five billion, six hundred thirty-two million, twenty-two thousand, six hundred sixteen".