161455064046543 has 8 divisors (see below), whose sum is σ = 239192687476400. Its totient is φ = 107636709364344.

The previous prime is 161455064046511. The next prime is 161455064046559. The reversal of 161455064046543 is 345640460554161.

161455064046543 is a `hidden beast` number, since 1 + 6 + 1 + 4 + 5 + 50 + 6 + 4 + 0 + 46 + 543 = 666.

It is not a de Polignac number, because 161455064046543 - 2⁵ = 161455064046511 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 161455064046543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161455064046743) 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, 2989908593428 + ... + 2989908593481.

It is an arithmetic number, because the mean of its divisors is an integer number (29899085934550).

Almost surely, 2^{161455064046543} is an apocalyptic number.

161455064046543 is a deficient number, since it is larger than the sum of its proper divisors (77737623429857).

161455064046543 is an equidigital number, since it uses as much as digits as its factorization.

161455064046543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5979817186918 (or 5979817186912 counting only the distinct ones).

The product of its (nonzero) digits is 20736000, while the sum is 54.

The spelling of 161455064046543 in words is "one hundred sixty-one trillion, four hundred fifty-five billion, sixty-four million, forty-six thousand, five hundred forty-three".