16545723531161 has 8 divisors (see below), whose sum is σ = 18050809753344. Its totient is φ = 15040792231920.

The previous prime is 16545723531137. The next prime is 16545723531173. The reversal of 16545723531161 is 16113532754561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16545723531161 - 2⁶ = 16545723531097 is a prime.

It is a super-2 number, since 2×16545723531161² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16545723531661) 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, 38507366 + ... + 38934671.

It is an arithmetic number, because the mean of its divisors is an integer number (2256351219168).

Almost surely, 2^{16545723531161} is an apocalyptic number.

16545723531161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16545723531161 is a deficient number, since it is larger than the sum of its proper divisors (1505086222183).

16545723531161 is a wasteful number, since it uses less digits than its factorization.

16545723531161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77461471.

The product of its digits is 2268000, while the sum is 50.

The spelling of 16545723531161 in words is "sixteen trillion, five hundred forty-five billion, seven hundred twenty-three million, five hundred thirty-one thousand, one hundred sixty-one".