155823361219 has 2 divisors, whose sum is σ = 155823361220. Its totient is φ = 155823361218.

The previous prime is 155823361193. The next prime is 155823361231. The reversal of 155823361219 is 912163328551.

155823361219 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155823361219 - 2²³ = 155814972611 is a prime.

It is a super-2 number, since 2×155823361219² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (155823361919) 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, 77911680609 + 77911680610.

It is an arithmetic number, because the mean of its divisors is an integer number (77911680610).

Almost surely, 2^155823361219 is an apocalyptic number.

155823361219 is a deficient number, since it is larger than the sum of its proper divisors (1).

155823361219 is an equidigital number, since it uses as much as digits as its factorization.

155823361219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 388800, while the sum is 46.

The spelling of 155823361219 in words is "one hundred fifty-five billion, eight hundred twenty-three million, three hundred sixty-one thousand, two hundred nineteen".