11118645731 has 2 divisors, whose sum is σ = 11118645732. Its totient is φ = 11118645730.

The previous prime is 11118645719. The next prime is 11118645737. The reversal of 11118645731 is 13754681111.

11118645731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (13754681111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11118645731 - 2²² = 11114451427 is a prime.

It is a super-2 number, since 2×11118645731² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11118645737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5559322865 + 5559322866.

It is an arithmetic number, because the mean of its divisors is an integer number (5559322866).

Almost surely, 2^11118645731 is an apocalyptic number.

11118645731 is a deficient number, since it is larger than the sum of its proper divisors (1).

11118645731 is an equidigital number, since it uses as much as digits as its factorization.

11118645731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 38.

The spelling of 11118645731 in words is "eleven billion, one hundred eighteen million, six hundred forty-five thousand, seven hundred thirty-one".