136894561239 has 8 divisors (see below), whose sum is σ = 182527817472. Its totient is φ = 91262172920.

The previous prime is 136894561201. The next prime is 136894561253. The reversal of 136894561239 is 932165498631.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136894561239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136894561339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 409282 + ... + 664304.

It is an arithmetic number, because the mean of its divisors is an integer number (22815977184).

Almost surely, 2^136894561239 is an apocalyptic number.

136894561239 is a deficient number, since it is larger than the sum of its proper divisors (45633256233).

136894561239 is a wasteful number, since it uses less digits than its factorization.

136894561239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433957.

The product of its digits is 8398080, while the sum is 57.

The spelling of 136894561239 in words is "one hundred thirty-six billion, eight hundred ninety-four million, five hundred sixty-one thousand, two hundred thirty-nine".