155324331361 has 2 divisors, whose sum is σ = 155324331362. Its totient is φ = 155324331360.

The previous prime is 155324331311. The next prime is 155324331419. The reversal of 155324331361 is 163133423551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153025704225 + 2298627136 = 391185^2 + 47944^2 .

It is a cyclic number.

It is not a de Polignac number, because 155324331361 - 2¹⁹ = 155323807073 is a prime.

It is a super-2 number, since 2×155324331361² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 155324331361.

It is not a weakly prime, because it can be changed into another prime (155324331311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77662165680 + 77662165681.

It is an arithmetic number, because the mean of its divisors is an integer number (77662165681).

Almost surely, 2^155324331361 is an apocalyptic number.

It is an amenable number.

155324331361 is a deficient number, since it is larger than the sum of its proper divisors (1).

155324331361 is an equidigital number, since it uses as much as digits as its factorization.

155324331361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 97200, while the sum is 37.

The spelling of 155324331361 in words is "one hundred fifty-five billion, three hundred twenty-four million, three hundred thirty-one thousand, three hundred sixty-one".