495671409161 has 2 divisors, whose sum is σ = 495671409162. Its totient is φ = 495671409160.

The previous prime is 495671409131. The next prime is 495671409193. The reversal of 495671409161 is 161904176594.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 490567164025 + 5104245136 = 700405^2 + 71444^2 .

It is a cyclic number.

It is not a de Polignac number, because 495671409161 - 2⁶ = 495671409097 is a prime.

It is not a weakly prime, because it can be changed into another prime (495671409131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247835704580 + 247835704581.

It is an arithmetic number, because the mean of its divisors is an integer number (247835704581).

Almost surely, 2^495671409161 is an apocalyptic number.

It is an amenable number.

495671409161 is a deficient number, since it is larger than the sum of its proper divisors (1).

495671409161 is an equidigital number, since it uses as much as digits as its factorization.

495671409161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1632960, while the sum is 53.

The spelling of 495671409161 in words is "four hundred ninety-five billion, six hundred seventy-one million, four hundred nine thousand, one hundred sixty-one".