136661643311 has 16 divisors (see below), whose sum is σ = 148907299200. Its totient is φ = 124926828768.

The previous prime is 136661643269. The next prime is 136661643329. The reversal of 136661643311 is 113346166631.

It is a cyclic number.

It is not a de Polignac number, because 136661643311 - 2¹⁰ = 136661642287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136661643331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 820256 + ... + 972698.

It is an arithmetic number, because the mean of its divisors is an integer number (9306706200).

Almost surely, 2^136661643311 is an apocalyptic number.

136661643311 is a deficient number, since it is larger than the sum of its proper divisors (12245655889).

136661643311 is a wasteful number, since it uses less digits than its factorization.

136661643311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154118.

The product of its digits is 139968, while the sum is 41.

The spelling of 136661643311 in words is "one hundred thirty-six billion, six hundred sixty-one million, six hundred forty-three thousand, three hundred eleven".