11153318381 has 2 divisors, whose sum is σ = 11153318382. Its totient is φ = 11153318380.

The previous prime is 11153318329. The next prime is 11153318387. The reversal of 11153318381 is 18381335111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9133624900 + 2019693481 = 95570^2 + 44941^2 .

It is an emirp because it is prime and its reverse (18381335111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11153318381 is a prime.

It is a super-2 number, since 2×11153318381² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11153318387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5576659190 + 5576659191.

It is an arithmetic number, because the mean of its divisors is an integer number (5576659191).

Almost surely, 2^11153318381 is an apocalyptic number.

It is an amenable number.

11153318381 is a deficient number, since it is larger than the sum of its proper divisors (1).

11153318381 is an equidigital number, since it uses as much as digits as its factorization.

11153318381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 35.

The spelling of 11153318381 in words is "eleven billion, one hundred fifty-three million, three hundred eighteen thousand, three hundred eighty-one".