161373671 has 2 divisors, whose sum is σ = 161373672. Its totient is φ = 161373670.

The previous prime is 161373647. The next prime is 161373679. The reversal of 161373671 is 176373161.

It is a strong prime.

It is an emirp because it is prime and its reverse (176373161) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161373671 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161373679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80686835 + 80686836.

It is an arithmetic number, because the mean of its divisors is an integer number (80686836).

Almost surely, 2^161373671 is an apocalyptic number.

161373671 is a deficient number, since it is larger than the sum of its proper divisors (1).

161373671 is an equidigital number, since it uses as much as digits as its factorization.

161373671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15876, while the sum is 35.

The square root of 161373671 is about 12703.2937067518. The cubic root of 161373671 is about 544.4327301828.

The spelling of 161373671 in words is "one hundred sixty-one million, three hundred seventy-three thousand, six hundred seventy-one".