11996671187 has 2 divisors, whose sum is σ = 11996671188. Its totient is φ = 11996671186.

The previous prime is 11996671123. The next prime is 11996671237. The reversal of 11996671187 is 78117669911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11996671187 - 2⁶ = 11996671123 is a prime.

It is not a weakly prime, because it can be changed into another prime (11996671787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5998335593 + 5998335594.

It is an arithmetic number, because the mean of its divisors is an integer number (5998335594).

Almost surely, 2^11996671187 is an apocalyptic number.

11996671187 is a deficient number, since it is larger than the sum of its proper divisors (1).

11996671187 is an equidigital number, since it uses as much as digits as its factorization.

11996671187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 56.

The spelling of 11996671187 in words is "eleven billion, nine hundred ninety-six million, six hundred seventy-one thousand, one hundred eighty-seven".