156068009 has 2 divisors, whose sum is σ = 156068010. Its totient is φ = 156068008.

The previous prime is 156067963. The next prime is 156068021. The reversal of 156068009 is 900860651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81504784 + 74563225 = 9028^2 + 8635^2 .

It is a cyclic number.

It is not a de Polignac number, because 156068009 - 2⁸ = 156067753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 156068009.

It is not a weakly prime, because it can be changed into another prime (156068069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78034004 + 78034005.

It is an arithmetic number, because the mean of its divisors is an integer number (78034005).

Almost surely, 2^156068009 is an apocalyptic number.

It is an amenable number.

156068009 is a deficient number, since it is larger than the sum of its proper divisors (1).

156068009 is an equidigital number, since it uses as much as digits as its factorization.

156068009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 156068009 is about 12492.7182390383. The cubic root of 156068009 is about 538.3994778150.

The spelling of 156068009 in words is "one hundred fifty-six million, sixty-eight thousand, nine".