136644954672368 has 20 divisors (see below), whose sum is σ = 264809457287088. Its totient is φ = 68307030211200.

The previous prime is 136644954672361. The next prime is 136644954672427. The reversal of 136644954672368 is 863276459446631.

It is a junction number, because it is equal to n+sod(n) for n = 136644954672295 and 136644954672304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136644954672361) 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, 965372333 + ... + 965513868.

Almost surely, 2^{136644954672368} is an apocalyptic number.

It is an amenable number.

136644954672368 is a deficient number, since it is larger than the sum of its proper divisors (128164502614720).

136644954672368 is a wasteful number, since it uses less digits than its factorization.

136644954672368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1930890632 (or 1930890626 counting only the distinct ones).

The product of its digits is 3762339840, while the sum is 74.

The spelling of 136644954672368 in words is "one hundred thirty-six trillion, six hundred forty-four billion, nine hundred fifty-four million, six hundred seventy-two thousand, three hundred sixty-eight".