155134255439 has 2 divisors, whose sum is σ = 155134255440. Its totient is φ = 155134255438.

The previous prime is 155134255411. The next prime is 155134255511. The reversal of 155134255439 is 934552431551.

155134255439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (934552431551) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155134255439 is a prime.

It is a super-2 number, since 2×155134255439² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 155134255393 and 155134255402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155134255739) 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, 77567127719 + 77567127720.

It is an arithmetic number, because the mean of its divisors is an integer number (77567127720).

Almost surely, 2^155134255439 is an apocalyptic number.

155134255439 is a deficient number, since it is larger than the sum of its proper divisors (1).

155134255439 is an equidigital number, since it uses as much as digits as its factorization.

155134255439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1620000, while the sum is 47.

The spelling of 155134255439 in words is "one hundred fifty-five billion, one hundred thirty-four million, two hundred fifty-five thousand, four hundred thirty-nine".