16367742161 has 2 divisors, whose sum is σ = 16367742162. Its totient is φ = 16367742160.

The previous prime is 16367742121. The next prime is 16367742169. The reversal of 16367742161 is 16124776361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13405008400 + 2962733761 = 115780^2 + 54431^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16367742161 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (16367742169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8183871080 + 8183871081.

It is an arithmetic number, because the mean of its divisors is an integer number (8183871081).

Almost surely, 2^16367742161 is an apocalyptic number.

It is an amenable number.

16367742161 is a deficient number, since it is larger than the sum of its proper divisors (1).

16367742161 is an equidigital number, since it uses as much as digits as its factorization.

16367742161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 44.

The spelling of 16367742161 in words is "sixteen billion, three hundred sixty-seven million, seven hundred forty-two thousand, one hundred sixty-one".