11693947768189 has 4 divisors (see below), whose sum is σ = 11713667748156. Its totient is φ = 11674227788224.

The previous prime is 11693947768187. The next prime is 11693947768207. The reversal of 11693947768189 is 98186774939611.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5762448260100 + 5931499508089 = 2400510^2 + 2435467^2 .

It is a cyclic number.

It is not a de Polignac number, because 11693947768189 - 2¹ = 11693947768187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11693947768187) 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, 9859989094 + ... + 9859990279.

It is an arithmetic number, because the mean of its divisors is an integer number (2928416937039).

Almost surely, 2^{11693947768189} is an apocalyptic number.

It is an amenable number.

11693947768189 is a deficient number, since it is larger than the sum of its proper divisors (19719979967).

11693947768189 is an equidigital number, since it uses as much as digits as its factorization.

11693947768189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19719979966.

The product of its digits is 987614208, while the sum is 79.

The spelling of 11693947768189 in words is "eleven trillion, six hundred ninety-three billion, nine hundred forty-seven million, seven hundred sixty-eight thousand, one hundred eighty-nine".