16545188536 has 32 divisors (see below), whose sum is σ = 31697153280. Its totient is φ = 8092780000.

The previous prime is 16545188531. The next prime is 16545188537. The reversal of 16545188536 is 63588154561.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16545188531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 897411 + ... + 915661.

It is an arithmetic number, because the mean of its divisors is an integer number (990536040).

Almost surely, 2^16545188536 is an apocalyptic number.

It is an amenable number.

16545188536 is a deficient number, since it is larger than the sum of its proper divisors (15151964744).

16545188536 is a wasteful number, since it uses less digits than its factorization.

16545188536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20715 (or 20711 counting only the distinct ones).

The product of its digits is 3456000, while the sum is 52.

The spelling of 16545188536 in words is "sixteen billion, five hundred forty-five million, one hundred eighty-eight thousand, five hundred thirty-six".