3681336400091 has 8 divisors (see below), whose sum is σ = 4214172810240. Its totient is φ = 3150232792488.

The previous prime is 3681336400081. The next prime is 3681336400139. The reversal of 3681336400091 is 1900046331863.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3681336400091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3681336400061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 433196081 + ... + 433204578.

It is an arithmetic number, because the mean of its divisors is an integer number (526771601280).

Almost surely, 2^{3681336400091} is an apocalyptic number.

3681336400091 is a deficient number, since it is larger than the sum of its proper divisors (532836410149).

3681336400091 is an equidigital number, since it uses as much as digits as its factorization.

3681336400091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866401273.

The product of its (nonzero) digits is 279936, while the sum is 44.

The spelling of 3681336400091 in words is "three trillion, six hundred eighty-one billion, three hundred thirty-six million, four hundred thousand, ninety-one".