155405143533313 has 2 divisors, whose sum is σ = 155405143533314. Its totient is φ = 155405143533312.

The previous prime is 155405143533251. The next prime is 155405143533323. The reversal of 155405143533313 is 313335341504551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121038547069504 + 34366596463809 = 11001752^2 + 5862303^2 .

It is a cyclic number.

It is not a de Polignac number, because 155405143533313 - 2⁴⁵ = 120220771444481 is a prime.

It is not a weakly prime, because it can be changed into another prime (155405143533323) 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, 77702571766656 + 77702571766657.

It is an arithmetic number, because the mean of its divisors is an integer number (77702571766657).

Almost surely, 2^{155405143533313} is an apocalyptic number.

It is an amenable number.

155405143533313 is a deficient number, since it is larger than the sum of its proper divisors (1).

155405143533313 is an equidigital number, since it uses as much as digits as its factorization.

155405143533313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430000, while the sum is 46.

The spelling of 155405143533313 in words is "one hundred fifty-five trillion, four hundred five billion, one hundred forty-three million, five hundred thirty-three thousand, three hundred thirteen".