161031133046441 has 6 divisors (see below), whose sum is σ = 187321930278570. Its totient is φ = 138026685468336.

The previous prime is 161031133046417. The next prime is 161031133046471. The reversal of 161031133046441 is 144640331130161.

It can be written as a sum of positive squares in only one way, i.e., 98858854242841 + 62172278803600 = 9942779^2 + 7884940^2 .

It is not a de Polignac number, because 161031133046441 - 2³⁸ = 160756255139497 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161031133046395 and 161031133046404.

It is not an unprimeable number, because it can be changed into a prime (161031133046401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1643174826956 + ... + 1643174827053.

It is an arithmetic number, because the mean of its divisors is an integer number (31220321713095).

Almost surely, 2^{161031133046441} is an apocalyptic number.

It is an amenable number.

161031133046441 is a deficient number, since it is larger than the sum of its proper divisors (26290797232129).

161031133046441 is an equidigital number, since it uses as much as digits as its factorization.

161031133046441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3286349654023 (or 3286349654016 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The spelling of 161031133046441 in words is "one hundred sixty-one trillion, thirty-one billion, one hundred thirty-three million, forty-six thousand, four hundred forty-one".