16545217515232 has 48 divisors (see below), whose sum is σ = 37306454290560. Its totient is φ = 7075623719808.

The previous prime is 16545217515173. The next prime is 16545217515257. The reversal of 16545217515232 is 23251571254561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78977382 + ... + 79186597.

It is an arithmetic number, because the mean of its divisors is an integer number (777217797720).

Almost surely, 2^{16545217515232} is an apocalyptic number.

It is an amenable number.

16545217515232 is an abundant number, since it is smaller than the sum of its proper divisors (20761236775328).

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

16545217515232 is a wasteful number, since it uses less digits than its factorization.

16545217515232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158164463 (or 158164455 counting only the distinct ones).

The product of its digits is 2520000, while the sum is 49.

Adding to 16545217515232 its reverse (23251571254561), we get a palindrome (39796788769793).

The spelling of 16545217515232 in words is "sixteen trillion, five hundred forty-five billion, two hundred seventeen million, five hundred fifteen thousand, two hundred thirty-two".