11948757617 has 2 divisors, whose sum is σ = 11948757618. Its totient is φ = 11948757616.

The previous prime is 11948757571. The next prime is 11948757619. The reversal of 11948757617 is 71675784911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9332332816 + 2616424801 = 96604^2 + 51151^2 .

It is an emirp because it is prime and its reverse (71675784911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11948757617 - 2¹⁸ = 11948495473 is a prime.

Together with 11948757619, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11948757619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5974378808 + 5974378809.

It is an arithmetic number, because the mean of its divisors is an integer number (5974378809).

Almost surely, 2^11948757617 is an apocalyptic number.

It is an amenable number.

11948757617 is a deficient number, since it is larger than the sum of its proper divisors (1).

11948757617 is an equidigital number, since it uses as much as digits as its factorization.

11948757617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2963520, while the sum is 56.

The spelling of 11948757617 in words is "eleven billion, nine hundred forty-eight million, seven hundred fifty-seven thousand, six hundred seventeen".