155802368269 has 2 divisors, whose sum is σ = 155802368270. Its totient is φ = 155802368268.

The previous prime is 155802368219. The next prime is 155802368279. The reversal of 155802368269 is 962863208551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102838869225 + 52963499044 = 320685^2 + 230138^2 .

It is an emirp because it is prime and its reverse (962863208551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155802368269 - 2²⁷ = 155668150541 is a prime.

It is a super-2 number, since 2×155802368269² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155802368209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77901184134 + 77901184135.

It is an arithmetic number, because the mean of its divisors is an integer number (77901184135).

Almost surely, 2^155802368269 is an apocalyptic number.

It is an amenable number.

155802368269 is a deficient number, since it is larger than the sum of its proper divisors (1).

155802368269 is an equidigital number, since it uses as much as digits as its factorization.

155802368269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6220800, while the sum is 55.

The spelling of 155802368269 in words is "one hundred fifty-five billion, eight hundred two million, three hundred sixty-eight thousand, two hundred sixty-nine".