11518475719 has 2 divisors, whose sum is σ = 11518475720. Its totient is φ = 11518475718.

The previous prime is 11518475707. The next prime is 11518475729. The reversal of 11518475719 is 91757481511.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11518475719 - 2¹⁷ = 11518344647 is a prime.

It is a super-2 number, since 2×11518475719² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11518475729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5759237859 + 5759237860.

It is an arithmetic number, because the mean of its divisors is an integer number (5759237860).

Almost surely, 2^11518475719 is an apocalyptic number.

11518475719 is a deficient number, since it is larger than the sum of its proper divisors (1).

11518475719 is an equidigital number, since it uses as much as digits as its factorization.

11518475719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 352800, while the sum is 49.

The spelling of 11518475719 in words is "eleven billion, five hundred eighteen million, four hundred seventy-five thousand, seven hundred nineteen".