36681740721867 has 8 divisors (see below), whose sum is σ = 48925835380224. Its totient is φ = 24446069939048.

The previous prime is 36681740721853. The next prime is 36681740721869. The reversal of 36681740721867 is 76812704718663.

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 36681740721867 - 2⁷ = 36681740721739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 36681740721798 and 36681740721807.

It is not an unprimeable number, because it can be changed into a prime (36681740721869) 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 7 ways as a sum of consecutive naturals, for example, 2105958723 + ... + 2105976140.

It is an arithmetic number, because the mean of its divisors is an integer number (6115729422528).

Almost surely, 2^{36681740721867} is an apocalyptic number.

36681740721867 is a deficient number, since it is larger than the sum of its proper divisors (12244094658357).

36681740721867 is a wasteful number, since it uses less digits than its factorization.

36681740721867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4211937769.

The product of its (nonzero) digits is 113799168, while the sum is 66.

The spelling of 36681740721867 in words is "thirty-six trillion, six hundred eighty-one billion, seven hundred forty million, seven hundred twenty-one thousand, eight hundred sixty-seven".