16545724057492 has 18 divisors (see below), whose sum is σ = 33682366831722. Its totient is φ = 7091024595984.

The previous prime is 16545724057477. The next prime is 16545724057493. The reversal of 16545724057492 is 29475042754561.

It can be written as a sum of positive squares in only one way, i.e., 16470074855556 + 75649201936 = 4058334^2 + 275044^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16545724057492.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16545724057493) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42208479543 + ... + 42208479934.

Almost surely, 2^{16545724057492} is an apocalyptic number.

It is an amenable number.

16545724057492 is an abundant number, since it is smaller than the sum of its proper divisors (17136642774230).

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

16545724057492 is a wasteful number, since it uses less digits than its factorization.

16545724057492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84416959495 (or 84416959486 counting only the distinct ones).

The product of its (nonzero) digits is 84672000, while the sum is 61.

The spelling of 16545724057492 in words is "sixteen trillion, five hundred forty-five billion, seven hundred twenty-four million, fifty-seven thousand, four hundred ninety-two".