161073671687 has 2 divisors, whose sum is σ = 161073671688. Its totient is φ = 161073671686.

The previous prime is 161073671641. The next prime is 161073671713. The reversal of 161073671687 is 786176370161.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161073671687 - 2¹⁰ = 161073670663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161073671987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80536835843 + 80536835844.

It is an arithmetic number, because the mean of its divisors is an integer number (80536835844).

Almost surely, 2^161073671687 is an apocalyptic number.

161073671687 is a deficient number, since it is larger than the sum of its proper divisors (1).

161073671687 is an equidigital number, since it uses as much as digits as its factorization.

161073671687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1778112, while the sum is 53.

The spelling of 161073671687 in words is "one hundred sixty-one billion, seventy-three million, six hundred seventy-one thousand, six hundred eighty-seven".