11131818547 has 2 divisors, whose sum is σ = 11131818548. Its totient is φ = 11131818546.

The previous prime is 11131818497. The next prime is 11131818559. The reversal of 11131818547 is 74581813111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11131818547 - 2⁷ = 11131818419 is a prime.

It is not a weakly prime, because it can be changed into another prime (11131818647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5565909273 + 5565909274.

It is an arithmetic number, because the mean of its divisors is an integer number (5565909274).

Almost surely, 2^11131818547 is an apocalyptic number.

11131818547 is a deficient number, since it is larger than the sum of its proper divisors (1).

11131818547 is an equidigital number, since it uses as much as digits as its factorization.

11131818547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 40.

The spelling of 11131818547 in words is "eleven billion, one hundred thirty-one million, eight hundred eighteen thousand, five hundred forty-seven".