11111111110993 has 2 divisors, whose sum is σ = 11111111110994. Its totient is φ = 11111111110992.

The previous prime is 11111111110969. The next prime is 11111111110997. The reversal of 11111111110993 is 39901111111111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8368453837584 + 2742657273409 = 2892828^2 + 1656097^2 .

It is a cyclic number.

It is not a de Polignac number, because 11111111110993 - 2⁹ = 11111111110481 is a prime.

It is not a weakly prime, because it can be changed into another prime (11111111110997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555555555496 + 5555555555497.

It is an arithmetic number, because the mean of its divisors is an integer number (5555555555497).

Almost surely, 2^{11111111110993} is an apocalyptic number.

It is an amenable number.

11111111110993 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111111110993 is an equidigital number, since it uses as much as digits as its factorization.

11111111110993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 243, while the sum is 31.

The spelling of 11111111110993 in words is "eleven trillion, one hundred eleven billion, one hundred eleven million, one hundred ten thousand, nine hundred ninety-three".