21530355325032 has 16 divisors (see below), whose sum is σ = 53825888312640. Its totient is φ = 7176785108336.

The previous prime is 21530355324991. The next prime is 21530355325049. The reversal of 21530355325032 is 23052355303512.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 448549069248 + ... + 448549069295.

It is an arithmetic number, because the mean of its divisors is an integer number (3364118019540).

Almost surely, 2^{21530355325032} is an apocalyptic number.

It is an amenable number.

21530355325032 is an abundant number, since it is smaller than the sum of its proper divisors (32295532987608).

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

21530355325032 is a wasteful number, since it uses less digits than its factorization.

21530355325032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897098138552 (or 897098138548 counting only the distinct ones).

The product of its (nonzero) digits is 405000, while the sum is 39.

The spelling of 21530355325032 in words is "twenty-one trillion, five hundred thirty billion, three hundred fifty-five million, three hundred twenty-five thousand, thirty-two".