16545243227177 has 4 divisors (see below), whose sum is σ = 18908849402496. Its totient is φ = 14181637051860.

The previous prime is 16545243227171. The next prime is 16545243227297. The reversal of 16545243227177 is 77172234254561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16545243227177 - 2²⁸ = 16544974791721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16545243227171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1181803087649 + ... + 1181803087662.

It is an arithmetic number, because the mean of its divisors is an integer number (4727212350624).

Almost surely, 2^{16545243227177} is an apocalyptic number.

It is an amenable number.

16545243227177 is a deficient number, since it is larger than the sum of its proper divisors (2363606175319).

16545243227177 is an equidigital number, since it uses as much as digits as its factorization.

16545243227177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2363606175318.

The product of its digits is 19756800, while the sum is 56.

The spelling of 16545243227177 in words is "sixteen trillion, five hundred forty-five billion, two hundred forty-three million, two hundred twenty-seven thousand, one hundred seventy-seven".