36684396208391 has 2 divisors, whose sum is σ = 36684396208392. Its totient is φ = 36684396208390.

The previous prime is 36684396208387. The next prime is 36684396208463. The reversal of 36684396208391 is 19380269348663.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 36684396208391 - 2² = 36684396208387 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36684396208351) 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 as a sum of consecutive naturals, namely, 18342198104195 + 18342198104196.

It is an arithmetic number, because the mean of its divisors is an integer number (18342198104196).

Almost surely, 2^{36684396208391} is an apocalyptic number.

36684396208391 is a deficient number, since it is larger than the sum of its proper divisors (1).

36684396208391 is an equidigital number, since it uses as much as digits as its factorization.

36684396208391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241864704, while the sum is 68.

The spelling of 36684396208391 in words is "thirty-six trillion, six hundred eighty-four billion, three hundred ninety-six million, two hundred eight thousand, three hundred ninety-one".