21353603631332 has 48 divisors (see below), whose sum is σ = 44047711830528. Its totient is φ = 8868149155200.

The previous prime is 21353603631317. The next prime is 21353603631421. The reversal of 21353603631332 is 23313630635312.

It is a self number, because there is not a number n which added to its sum of digits gives 21353603631332.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80194523 + ... + 80460354.

It is an arithmetic number, because the mean of its divisors is an integer number (917660663136).

Almost surely, 2^{21353603631332} is an apocalyptic number.

It is an amenable number.

21353603631332 is an abundant number, since it is smaller than the sum of its proper divisors (22694108199196).

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

21353603631332 is a wasteful number, since it uses less digits than its factorization.

21353603631332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160655036 (or 160655034 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 41.

The spelling of 21353603631332 in words is "twenty-one trillion, three hundred fifty-three billion, six hundred three million, six hundred thirty-one thousand, three hundred thirty-two".