136563121345 has 32 divisors (see below), whose sum is σ = 206925331968. Its totient is φ = 84302896128.

The previous prime is 136563121339. The next prime is 136563121397. The reversal of 136563121345 is 543121365631.

It is a cyclic number.

It is not a de Polignac number, because 136563121345 - 2⁷ = 136563121217 is a prime.

It is a super-2 number, since 2×136563121345² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136563121298 and 136563121307.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4975834 + ... + 5003203.

It is an arithmetic number, because the mean of its divisors is an integer number (6466416624).

Almost surely, 2^136563121345 is an apocalyptic number.

It is an amenable number.

136563121345 is a deficient number, since it is larger than the sum of its proper divisors (70362210623).

136563121345 is a wasteful number, since it uses less digits than its factorization.

136563121345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9979089.

The product of its digits is 194400, while the sum is 40.

Adding to 136563121345 its reverse (543121365631), we get a palindrome (679684486976).

The spelling of 136563121345 in words is "one hundred thirty-six billion, five hundred sixty-three million, one hundred twenty-one thousand, three hundred forty-five".