136561332041 has 4 divisors (see below), whose sum is σ = 136625118084. Its totient is φ = 136497546000.

The previous prime is 136561332031. The next prime is 136561332049. The reversal of 136561332041 is 140233165631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 71086757641 + 65474574400 = 266621^2 + 255880^2 .

It is a cyclic number.

It is not a de Polignac number, because 136561332041 - 2²² = 136557137737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136561331992 and 136561332010.

It is not an unprimeable number, because it can be changed into a prime (136561332049) 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, 31889810 + ... + 31894091.

It is an arithmetic number, because the mean of its divisors is an integer number (34156279521).

Almost surely, 2^136561332041 is an apocalyptic number.

It is an amenable number.

136561332041 is a deficient number, since it is larger than the sum of its proper divisors (63786043).

136561332041 is an equidigital number, since it uses as much as digits as its factorization.

136561332041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63786042.

The product of its (nonzero) digits is 38880, while the sum is 35.

Adding to 136561332041 its reverse (140233165631), we get a palindrome (276794497672).

The spelling of 136561332041 in words is "one hundred thirty-six billion, five hundred sixty-one million, three hundred thirty-two thousand, forty-one".