136681156865 has 16 divisors (see below), whose sum is σ = 183089180736. Its totient is φ = 97092744000.

The previous prime is 136681156861. The next prime is 136681156879. The reversal of 136681156865 is 568651186631.

It is not a de Polignac number, because 136681156865 - 2² = 136681156861 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136681156865.

It is not an unprimeable number, because it can be changed into a prime (136681156861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28894286 + ... + 28899015.

It is an arithmetic number, because the mean of its divisors is an integer number (11443073796).

Almost surely, 2^136681156865 is an apocalyptic number.

It is an amenable number.

136681156865 is a deficient number, since it is larger than the sum of its proper divisors (46408023871).

136681156865 is a wasteful number, since it uses less digits than its factorization.

136681156865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57793360.

The product of its digits is 6220800, while the sum is 56.

The spelling of 136681156865 in words is "one hundred thirty-six billion, six hundred eighty-one million, one hundred fifty-six thousand, eight hundred sixty-five".