161476565671 has 2 divisors, whose sum is σ = 161476565672. Its totient is φ = 161476565670.

The previous prime is 161476565617. The next prime is 161476565689. The reversal of 161476565671 is 176565674161.

Together with previous prime (161476565617) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161476565671 - 2²⁵ = 161443011239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161476565171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80738282835 + 80738282836.

It is an arithmetic number, because the mean of its divisors is an integer number (80738282836).

Almost surely, 2^161476565671 is an apocalyptic number.

161476565671 is a deficient number, since it is larger than the sum of its proper divisors (1).

161476565671 is an equidigital number, since it uses as much as digits as its factorization.

161476565671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6350400, while the sum is 55.

The spelling of 161476565671 in words is "one hundred sixty-one billion, four hundred seventy-six million, five hundred sixty-five thousand, six hundred seventy-one".