136563643645 has 32 divisors (see below), whose sum is σ = 194325505920. Its totient is φ = 90822224640.

The previous prime is 136563643631. The next prime is 136563643663. The reversal of 136563643645 is 546346365631.

It is not a de Polignac number, because 136563643645 - 2⁹ = 136563643133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 136563643592 and 136563643601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 816010 + ... + 969019.

It is an arithmetic number, because the mean of its divisors is an integer number (6072672060).

Almost surely, 2^136563643645 is an apocalyptic number.

It is an amenable number.

136563643645 is a deficient number, since it is larger than the sum of its proper divisors (57761862275).

136563643645 is a wasteful number, since it uses less digits than its factorization.

136563643645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1785165.

The product of its digits is 13996800, while the sum is 52.

The spelling of 136563643645 in words is "one hundred thirty-six billion, five hundred sixty-three million, six hundred forty-three thousand, six hundred forty-five".