136186719909 has 16 divisors (see below), whose sum is σ = 186186805632. Its totient is φ = 88510713408.

The previous prime is 136186719901. The next prime is 136186719923. The reversal of 136186719909 is 909917681631.

It is a happy number.

It is not a de Polignac number, because 136186719909 - 2³ = 136186719901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136186719901) 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 15 ways as a sum of consecutive naturals, for example, 2702809 + ... + 2752734.

It is an arithmetic number, because the mean of its divisors is an integer number (11636675352).

Almost surely, 2^136186719909 is an apocalyptic number.

It is an amenable number.

136186719909 is a deficient number, since it is larger than the sum of its proper divisors (50000085723).

136186719909 is a wasteful number, since it uses less digits than its factorization.

136186719909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5455756.

The product of its (nonzero) digits is 4408992, while the sum is 60.

The spelling of 136186719909 in words is "one hundred thirty-six billion, one hundred eighty-six million, seven hundred nineteen thousand, nine hundred nine".