161431830515043 has 96 divisors (see below), whose sum is σ = 260404332724224. Its totient is φ = 95547959640000.

The previous prime is 161431830515003. The next prime is 161431830515051. The reversal of 161431830515043 is 340515038134161.

161431830515043 is a `hidden beast` number, since 1 + 6 + 1 + 431 + 83 + 0 + 51 + 50 + 43 = 666.

161431830515043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161431830515043 - 2³⁰ = 161430756773219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161431830515043.

It is not an unprimeable number, because it can be changed into a prime (161431830515003) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 563139678 + ... + 563426268.

It is an arithmetic number, because the mean of its divisors is an integer number (2712545132544).

Almost surely, 2^{161431830515043} is an apocalyptic number.

161431830515043 is a deficient number, since it is larger than the sum of its proper divisors (98972502209181).

161431830515043 is a wasteful number, since it uses less digits than its factorization.

161431830515043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287437 (or 287434 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 161431830515043 in words is "one hundred sixty-one trillion, four hundred thirty-one billion, eight hundred thirty million, five hundred fifteen thousand, forty-three".