136661474406567 has 32 divisors (see below), whose sum is σ = 209251350097920. Its totient is φ = 78462580353120.

The previous prime is 136661474406487. The next prime is 136661474406641. The reversal of 136661474406567 is 765604474166631.

It is a happy number.

It is not a de Polignac number, because 136661474406567 - 2⁴⁴ = 119069288362151 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 136661474406498 and 136661474406507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136661474408567) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10152228 + ... + 19400790.

It is an arithmetic number, because the mean of its divisors is an integer number (6539104690560).

Almost surely, 2^{136661474406567} is an apocalyptic number.

136661474406567 is a deficient number, since it is larger than the sum of its proper divisors (72589875691353).

136661474406567 is a wasteful number, since it uses less digits than its factorization.

136661474406567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9272163.

The product of its (nonzero) digits is 365783040, while the sum is 66.

The spelling of 136661474406567 in words is "one hundred thirty-six trillion, six hundred sixty-one billion, four hundred seventy-four million, four hundred six thousand, five hundred sixty-seven".