10161665771 has 2 divisors, whose sum is σ = 10161665772. Its totient is φ = 10161665770.

The previous prime is 10161665737. The next prime is 10161665819. The reversal of 10161665771 is 17756616101.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10161665771 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (10161665711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5080832885 + 5080832886.

It is an arithmetic number, because the mean of its divisors is an integer number (5080832886).

Almost surely, 2^10161665771 is an apocalyptic number.

10161665771 is a deficient number, since it is larger than the sum of its proper divisors (1).

10161665771 is an equidigital number, since it uses as much as digits as its factorization.

10161665771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 41.

The spelling of 10161665771 in words is "ten billion, one hundred sixty-one million, six hundred sixty-five thousand, seven hundred seventy-one".