11331318134861 has 2 divisors, whose sum is σ = 11331318134862. Its totient is φ = 11331318134860.

The previous prime is 11331318134819. The next prime is 11331318134869. The reversal of 11331318134861 is 16843181313311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6913775912836 + 4417542222025 = 2629406^2 + 2101795^2 .

It is an emirp because it is prime and its reverse (16843181313311) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11331318134861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11331318134869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5665659067430 + 5665659067431.

It is an arithmetic number, because the mean of its divisors is an integer number (5665659067431).

Almost surely, 2^{11331318134861} is an apocalyptic number.

It is an amenable number.

11331318134861 is a deficient number, since it is larger than the sum of its proper divisors (1).

11331318134861 is an equidigital number, since it uses as much as digits as its factorization.

11331318134861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 44.

The spelling of 11331318134861 in words is "eleven trillion, three hundred thirty-one billion, three hundred eighteen million, one hundred thirty-four thousand, eight hundred sixty-one".