161292671 has 2 divisors, whose sum is σ = 161292672. Its totient is φ = 161292670.

The previous prime is 161292643. The next prime is 161292683. The reversal of 161292671 is 176292161.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161292671 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161292611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80646335 + 80646336.

It is an arithmetic number, because the mean of its divisors is an integer number (80646336).

Almost surely, 2^161292671 is an apocalyptic number.

161292671 is a deficient number, since it is larger than the sum of its proper divisors (1).

161292671 is an equidigital number, since it uses as much as digits as its factorization.

161292671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 35.

The square root of 161292671 is about 12700.1051570450. The cubic root of 161292671 is about 544.3416239710.

The spelling of 161292671 in words is "one hundred sixty-one million, two hundred ninety-two thousand, six hundred seventy-one".