155440312134259 has 2 divisors, whose sum is σ = 155440312134260. Its totient is φ = 155440312134258.

The previous prime is 155440312134203. The next prime is 155440312134299. The reversal of 155440312134259 is 952431213044551.

It is a strong prime.

It is an emirp because it is prime and its reverse (952431213044551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155440312134259 - 2¹⁵ = 155440312101491 is a prime.

It is not a weakly prime, because it can be changed into another prime (155440312134299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77720156067129 + 77720156067130.

It is an arithmetic number, because the mean of its divisors is an integer number (77720156067130).

Almost surely, 2^{155440312134259} is an apocalyptic number.

155440312134259 is a deficient number, since it is larger than the sum of its proper divisors (1).

155440312134259 is an equidigital number, since it uses as much as digits as its factorization.

155440312134259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592000, while the sum is 49.

The spelling of 155440312134259 in words is "one hundred fifty-five trillion, four hundred forty billion, three hundred twelve million, one hundred thirty-four thousand, two hundred fifty-nine".