136381583461 has 2 divisors, whose sum is σ = 136381583462. Its totient is φ = 136381583460.

The previous prime is 136381583423. The next prime is 136381583521. The reversal of 136381583461 is 164385183631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136061388225 + 320195236 = 368865^2 + 17894^2 .

It is a cyclic number.

It is not a de Polignac number, because 136381583461 - 2⁷ = 136381583333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136381583761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68190791730 + 68190791731.

It is an arithmetic number, because the mean of its divisors is an integer number (68190791731).

Almost surely, 2^136381583461 is an apocalyptic number.

It is an amenable number.

136381583461 is a deficient number, since it is larger than the sum of its proper divisors (1).

136381583461 is an equidigital number, since it uses as much as digits as its factorization.

136381583461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1244160, while the sum is 49.

The spelling of 136381583461 in words is "one hundred thirty-six billion, three hundred eighty-one million, five hundred eighty-three thousand, four hundred sixty-one".