135816124987 has 2 divisors, whose sum is σ = 135816124988. Its totient is φ = 135816124986.

The previous prime is 135816124973. The next prime is 135816124993. The reversal of 135816124987 is 789421618531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135816124987 - 2⁷ = 135816124859 is a prime.

It is not a weakly prime, because it can be changed into another prime (135816124967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67908062493 + 67908062494.

It is an arithmetic number, because the mean of its divisors is an integer number (67908062494).

Almost surely, 2^135816124987 is an apocalyptic number.

135816124987 is a deficient number, since it is larger than the sum of its proper divisors (1).

135816124987 is an equidigital number, since it uses as much as digits as its factorization.

135816124987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2903040, while the sum is 55.

The spelling of 135816124987 in words is "one hundred thirty-five billion, eight hundred sixteen million, one hundred twenty-four thousand, nine hundred eighty-seven".