156117011 has 2 divisors, whose sum is σ = 156117012. Its totient is φ = 156117010.

The previous prime is 156116993. The next prime is 156117019. The reversal of 156117011 is 110711651.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-156117011 is a prime.

It is a super-2 number, since 2×156117011² = 48745042247148242, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (156117019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78058505 + 78058506.

It is an arithmetic number, because the mean of its divisors is an integer number (78058506).

Almost surely, 2^156117011 is an apocalyptic number.

156117011 is a deficient number, since it is larger than the sum of its proper divisors (1).

156117011 is an equidigital number, since it uses as much as digits as its factorization.

156117011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 210, while the sum is 23.

The square root of 156117011 is about 12494.6793076093. The cubic root of 156117011 is about 538.4558205395.

Adding to 156117011 its reverse (110711651), we get a palindrome (266828662).

It can be divided in two parts, 15611 and 7011, that added together give a palindrome (22622).

The spelling of 156117011 in words is "one hundred fifty-six million, one hundred seventeen thousand, eleven".