10011111161 has 2 divisors, whose sum is σ = 10011111162. Its totient is φ = 10011111160.

The previous prime is 10011111101. The next prime is 10011111217. The reversal of 10011111161 is 16111111001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9268875625 + 742235536 = 96275^2 + 27244^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10011111161 is a prime.

It is not a weakly prime, because it can be changed into another prime (10011111101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005555580 + 5005555581.

It is an arithmetic number, because the mean of its divisors is an integer number (5005555581).

Almost surely, 2^10011111161 is an apocalyptic number.

It is an amenable number.

10011111161 is a deficient number, since it is larger than the sum of its proper divisors (1).

10011111161 is an equidigital number, since it uses as much as digits as its factorization.

10011111161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6, while the sum is 14.

Adding to 10011111161 its reverse (16111111001), we get a palindrome (26122222162).

The spelling of 10011111161 in words is "ten billion, eleven million, one hundred eleven thousand, one hundred sixty-one".