136530147909 has 4 divisors (see below), whose sum is σ = 182040197216. Its totient is φ = 91020098604.

The previous prime is 136530147899. The next prime is 136530147913. The reversal of 136530147909 is 909741035631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 136530147909 - 2¹¹ = 136530145861 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136530147709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22755024649 + ... + 22755024654.

It is an arithmetic number, because the mean of its divisors is an integer number (45510049304).

Almost surely, 2^136530147909 is an apocalyptic number.

It is an amenable number.

136530147909 is a deficient number, since it is larger than the sum of its proper divisors (45510049307).

136530147909 is an equidigital number, since it uses as much as digits as its factorization.

136530147909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45510049306.

The product of its (nonzero) digits is 612360, while the sum is 48.

The spelling of 136530147909 in words is "one hundred thirty-six billion, five hundred thirty million, one hundred forty-seven thousand, nine hundred nine".