134256539887 has 2 divisors, whose sum is σ = 134256539888. Its totient is φ = 134256539886.

The previous prime is 134256539867. The next prime is 134256539897. The reversal of 134256539887 is 788935652431.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134256539887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134256539867) 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, 67128269943 + 67128269944.

It is an arithmetic number, because the mean of its divisors is an integer number (67128269944).

Almost surely, 2^134256539887 is an apocalyptic number.

134256539887 is a deficient number, since it is larger than the sum of its proper divisors (1).

134256539887 is an equidigital number, since it uses as much as digits as its factorization.

134256539887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43545600, while the sum is 61.

The spelling of 134256539887 in words is "one hundred thirty-four billion, two hundred fifty-six million, five hundred thirty-nine thousand, eight hundred eighty-seven".