11627919917 has 2 divisors, whose sum is σ = 11627919918. Its totient is φ = 11627919916.

The previous prime is 11627919893. The next prime is 11627919929. The reversal of 11627919917 is 71991972611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11403249796 + 224670121 = 106786^2 + 14989^2 .

It is a cyclic number.

It is not a de Polignac number, because 11627919917 - 2⁸ = 11627919661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11627919977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5813959958 + 5813959959.

It is an arithmetic number, because the mean of its divisors is an integer number (5813959959).

Almost surely, 2^11627919917 is an apocalyptic number.

It is an amenable number.

11627919917 is a deficient number, since it is larger than the sum of its proper divisors (1).

11627919917 is an equidigital number, since it uses as much as digits as its factorization.

11627919917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 428652, while the sum is 53.

The spelling of 11627919917 in words is "eleven billion, six hundred twenty-seven million, nine hundred nineteen thousand, nine hundred seventeen".