21453756532532 has 96 divisors (see below), whose sum is σ = 40518813734784. Its totient is φ = 9920752128000.

The previous prime is 21453756532529. The next prime is 21453756532589. The reversal of 21453756532532 is 23523565735412.

21453756532532 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104528003 + ... + 104733045.

It is an arithmetic number, because the mean of its divisors is an integer number (422070976404).

Almost surely, 2^{21453756532532} is an apocalyptic number.

It is an amenable number.

21453756532532 is a deficient number, since it is larger than the sum of its proper divisors (19065057202252).

21453756532532 is a wasteful number, since it uses less digits than its factorization.

21453756532532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205569 (or 205567 counting only the distinct ones).

The product of its digits is 22680000, while the sum is 53.

The spelling of 21453756532532 in words is "twenty-one trillion, four hundred fifty-three billion, seven hundred fifty-six million, five hundred thirty-two thousand, five hundred thirty-two".