11191257929 has 2 divisors, whose sum is σ = 11191257930. Its totient is φ = 11191257928.

The previous prime is 11191257911. The next prime is 11191257949. The reversal of 11191257929 is 92975219111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9170935225 + 2020322704 = 95765^2 + 44948^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11191257929 is a prime.

It is not a weakly prime, because it can be changed into another prime (11191257949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5595628964 + 5595628965.

It is an arithmetic number, because the mean of its divisors is an integer number (5595628965).

Almost surely, 2^11191257929 is an apocalyptic number.

It is an amenable number.

11191257929 is a deficient number, since it is larger than the sum of its proper divisors (1).

11191257929 is an equidigital number, since it uses as much as digits as its factorization.

11191257929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 102060, while the sum is 47.

The spelling of 11191257929 in words is "eleven billion, one hundred ninety-one million, two hundred fifty-seven thousand, nine hundred twenty-nine".