16161101611 has 2 divisors, whose sum is σ = 16161101612. Its totient is φ = 16161101610.

The previous prime is 16161101587. The next prime is 16161101657. The reversal of 16161101611 is 11610116161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16161101611 - 2³¹ = 14013617963 is a prime.

It is a super-2 number, since 2×16161101611² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16161101711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8080550805 + 8080550806.

It is an arithmetic number, because the mean of its divisors is an integer number (8080550806).

Almost surely, 2^16161101611 is an apocalyptic number.

16161101611 is a deficient number, since it is larger than the sum of its proper divisors (1).

16161101611 is an equidigital number, since it uses as much as digits as its factorization.

16161101611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 25.

Adding to 16161101611 its reverse (11610116161), we get a palindrome (27771217772).

The spelling of 16161101611 in words is "sixteen billion, one hundred sixty-one million, one hundred one thousand, six hundred eleven".