16545661324031 has 16 divisors (see below), whose sum is σ = 19137378484224. Its totient is φ = 14010961051104.

The previous prime is 16545661324007. The next prime is 16545661324037. The reversal of 16545661324031 is 13042316654561.

16545661324031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 16545661324031 - 2⁶ = 16545661323967 is a prime.

It is a super-2 number, since 2×16545661324031² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16545661324037) 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, 88254965 + ... + 88442241.

It is an arithmetic number, because the mean of its divisors is an integer number (1196086155264).

Almost surely, 2^{16545661324031} is an apocalyptic number.

16545661324031 is a deficient number, since it is larger than the sum of its proper divisors (2591717160193).

16545661324031 is a wasteful number, since it uses less digits than its factorization.

16545661324031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339430.

The product of its (nonzero) digits is 1555200, while the sum is 47.

Adding to 16545661324031 its reverse (13042316654561), we get a palindrome (29587977978592).

The spelling of 16545661324031 in words is "sixteen trillion, five hundred forty-five billion, six hundred sixty-one million, three hundred twenty-four thousand, thirty-one".