135816124989 has 32 divisors (see below), whose sum is σ = 188321366016. Its totient is φ = 87012334080.

The previous prime is 135816124987. The next prime is 135816124993. The reversal of 135816124989 is 989421618531.

It is a happy number.

It is not a de Polignac number, because 135816124989 - 2¹ = 135816124987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135816124987) 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 in 31 ways as a sum of consecutive naturals, for example, 1697884 + ... + 1776074.

It is an arithmetic number, because the mean of its divisors is an integer number (5885042688).

Almost surely, 2^135816124989 is an apocalyptic number.

It is an amenable number.

135816124989 is a deficient number, since it is larger than the sum of its proper divisors (52505241027).

135816124989 is a wasteful number, since it uses less digits than its factorization.

135816124989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78465.

The product of its digits is 3732480, while the sum is 57.

The spelling of 135816124989 in words is "one hundred thirty-five billion, eight hundred sixteen million, one hundred twenty-four thousand, nine hundred eighty-nine".