161377298041 has 2 divisors, whose sum is σ = 161377298042. Its totient is φ = 161377298040.

The previous prime is 161377298023. The next prime is 161377298099. The reversal of 161377298041 is 140892773161.

161377298041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160243292416 + 1134005625 = 400304^2 + 33675^2 .

It is a cyclic number.

It is not a de Polignac number, because 161377298041 - 2¹⁷ = 161377166969 is a prime.

It is not a weakly prime, because it can be changed into another prime (161377295041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80688649020 + 80688649021.

It is an arithmetic number, because the mean of its divisors is an integer number (80688649021).

Almost surely, 2^161377298041 is an apocalyptic number.

It is an amenable number.

161377298041 is a deficient number, since it is larger than the sum of its proper divisors (1).

161377298041 is an equidigital number, since it uses as much as digits as its factorization.

161377298041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 508032, while the sum is 49.

The spelling of 161377298041 in words is "one hundred sixty-one billion, three hundred seventy-seven million, two hundred ninety-eight thousand, forty-one".