16551257612452 has 48 divisors (see below), whose sum is σ = 30613769726400. Its totient is φ = 7808048058240.

The previous prime is 16551257612437. The next prime is 16551257612459. The reversal of 16551257612452 is 25421675215561.

It is a self number, because there is not a number n which added to its sum of digits gives 16551257612452.

It is not an unprimeable number, because it can be changed into a prime (16551257612459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55889323 + ... + 56184685.

It is an arithmetic number, because the mean of its divisors is an integer number (637786869300).

Almost surely, 2^{16551257612452} is an apocalyptic number.

It is an amenable number.

16551257612452 is a deficient number, since it is larger than the sum of its proper divisors (14062512113948).

16551257612452 is a wasteful number, since it uses less digits than its factorization.

16551257612452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298396 (or 298394 counting only the distinct ones).

The product of its digits is 5040000, while the sum is 52.

The spelling of 16551257612452 in words is "sixteen trillion, five hundred fifty-one billion, two hundred fifty-seven million, six hundred twelve thousand, four hundred fifty-two".