11543671091 has 2 divisors, whose sum is σ = 11543671092. Its totient is φ = 11543671090.

The previous prime is 11543671063. The next prime is 11543671099. The reversal of 11543671091 is 19017634511.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11543671091 is a prime.

It is not a weakly prime, because it can be changed into another prime (11543671099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5771835545 + 5771835546.

It is an arithmetic number, because the mean of its divisors is an integer number (5771835546).

Almost surely, 2^11543671091 is an apocalyptic number.

11543671091 is a deficient number, since it is larger than the sum of its proper divisors (1).

11543671091 is an equidigital number, since it uses as much as digits as its factorization.

11543671091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 38.

The spelling of 11543671091 in words is "eleven billion, five hundred forty-three million, six hundred seventy-one thousand, ninety-one".