21453089112 has 160 divisors (see below), whose sum is σ = 73955296800. Its totient is φ = 5657942016.

The previous prime is 21453089111. The next prime is 21453089117. The reversal of 21453089112 is 21198035412.

21453089112 is a `hidden beast` number, since 2 + 1 + 4 + 530 + 8 + 9 + 112 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21453089111) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 122937 + ... + 240872.

It is an arithmetic number, because the mean of its divisors is an integer number (462220605).

Almost surely, 2^21453089112 is an apocalyptic number.

It is an amenable number.

21453089112 is an abundant number, since it is smaller than the sum of its proper divisors (52502207688).

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

21453089112 is a wasteful number, since it uses less digits than its factorization.

21453089112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363847 (or 363834 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The spelling of 21453089112 in words is "twenty-one billion, four hundred fifty-three million, eighty-nine thousand, one hundred twelve".