156506122229 has 2 divisors, whose sum is σ = 156506122230. Its totient is φ = 156506122228.

The previous prime is 156506122187. The next prime is 156506122243. The reversal of 156506122229 is 922221605651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86544814225 + 69961308004 = 294185^2 + 264502^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-156506122229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (156506125229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78253061114 + 78253061115.

It is an arithmetic number, because the mean of its divisors is an integer number (78253061115).

Almost surely, 2^156506122229 is an apocalyptic number.

It is an amenable number.

156506122229 is a deficient number, since it is larger than the sum of its proper divisors (1).

156506122229 is an equidigital number, since it uses as much as digits as its factorization.

156506122229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 41.

The spelling of 156506122229 in words is "one hundred fifty-six billion, five hundred six million, one hundred twenty-two thousand, two hundred twenty-nine".