135991846939 has 8 divisors (see below), whose sum is σ = 146675002320. Its totient is φ = 125340440736.

The previous prime is 135991846927. The next prime is 135991846943. The reversal of 135991846939 is 939648199531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135991846939 - 2²⁷ = 135857629211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135991846439) 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 7 ways as a sum of consecutive naturals, for example, 7928392 + ... + 7945525.

It is an arithmetic number, because the mean of its divisors is an integer number (18334375290).

Almost surely, 2^135991846939 is an apocalyptic number.

135991846939 is a deficient number, since it is larger than the sum of its proper divisors (10683155381).

135991846939 is a wasteful number, since it uses less digits than its factorization.

135991846939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15874589.

The product of its digits is 56687040, while the sum is 67.

The spelling of 135991846939 in words is "one hundred thirty-five billion, nine hundred ninety-one million, eight hundred forty-six thousand, nine hundred thirty-nine".