11681808161627 has 4 divisors (see below), whose sum is σ = 11681831497896. Its totient is φ = 11681784825360.

The previous prime is 11681808161579. The next prime is 11681808161689. The reversal of 11681808161627 is 72616180818611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11681808161627 - 2¹⁸ = 11681807899483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11681808161927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10900418 + ... + 11924039.

It is an arithmetic number, because the mean of its divisors is an integer number (2920457874474).

Almost surely, 2^{11681808161627} is an apocalyptic number.

11681808161627 is a deficient number, since it is larger than the sum of its proper divisors (23336269).

11681808161627 is an equidigital number, since it uses as much as digits as its factorization.

11681808161627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23336268.

The product of its (nonzero) digits is 1548288, while the sum is 56.

The spelling of 11681808161627 in words is "eleven trillion, six hundred eighty-one billion, eight hundred eight million, one hundred sixty-one thousand, six hundred twenty-seven".