21110204719764 has 36 divisors (see below), whose sum is σ = 54266345471520. Its totient is φ = 6917468212560.

The previous prime is 21110204719763. The next prime is 21110204719781. The reversal of 21110204719764 is 46791740201112.

21110204719764 is a `hidden beast` number, since 2 + 1 + 1 + 10 + 20 + 471 + 97 + 64 = 666.

21110204719764 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110204719763) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4969443432 + ... + 4969447679.

It is an arithmetic number, because the mean of its divisors is an integer number (1507398485320).

Almost surely, 2^{21110204719764} is an apocalyptic number.

It is an amenable number.

21110204719764 is an abundant number, since it is smaller than the sum of its proper divisors (33156140751756).

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

21110204719764 is a wasteful number, since it uses less digits than its factorization.

21110204719764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9938891180 (or 9938891175 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The spelling of 21110204719764 in words is "twenty-one trillion, one hundred ten billion, two hundred four million, seven hundred nineteen thousand, seven hundred sixty-four".