136841381065 has 8 divisors (see below), whose sum is σ = 164221543368. Its totient is φ = 109465180800.

The previous prime is 136841381063. The next prime is 136841381081. The reversal of 136841381065 is 560183148631.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 23038382656 + 113802998409 = 151784^2 + 337347^2 .

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

It is not a de Polignac number, because 136841381065 - 2¹ = 136841381063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136841381063) 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, 913986 + ... + 1053115.

It is an arithmetic number, because the mean of its divisors is an integer number (20527692921).

Almost surely, 2^136841381065 is an apocalyptic number.

It is an amenable number.

136841381065 is a deficient number, since it is larger than the sum of its proper divisors (27380162303).

136841381065 is a wasteful number, since it uses less digits than its factorization.

136841381065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1981019.

The product of its (nonzero) digits is 414720, while the sum is 46.

The spelling of 136841381065 in words is "one hundred thirty-six billion, eight hundred forty-one million, three hundred eighty-one thousand, sixty-five".