136656949663 has 8 divisors (see below), whose sum is σ = 147184151408. Its totient is φ = 126131909184.

The previous prime is 136656949591. The next prime is 136656949673. The reversal of 136656949663 is 366949656631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 136656949663 - 2²¹ = 136654852511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136656949595 and 136656949604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136656949673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407781 + ... + 663022.

It is an arithmetic number, because the mean of its divisors is an integer number (18398018926).

Almost surely, 2^136656949663 is an apocalyptic number.

136656949663 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

136656949663 is a deficient number, since it is larger than the sum of its proper divisors (10527201745).

136656949663 is a wasteful number, since it uses less digits than its factorization.

136656949663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080633.

The product of its digits is 113374080, while the sum is 64.

The spelling of 136656949663 in words is "one hundred thirty-six billion, six hundred fifty-six million, nine hundred forty-nine thousand, six hundred sixty-three".