11618143081 has 2 divisors, whose sum is σ = 11618143082. Its totient is φ = 11618143080.

The previous prime is 11618142983. The next prime is 11618143099. The reversal of 11618143081 is 18034181611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11108106025 + 510037056 = 105395^2 + 22584^2 .

It is a cyclic number.

It is not a de Polignac number, because 11618143081 - 2¹⁷ = 11618012009 is a prime.

It is a super-2 number, since 2×11618143081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11618123081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5809071540 + 5809071541.

It is an arithmetic number, because the mean of its divisors is an integer number (5809071541).

Almost surely, 2^11618143081 is an apocalyptic number.

It is an amenable number.

11618143081 is a deficient number, since it is larger than the sum of its proper divisors (1).

11618143081 is an equidigital number, since it uses as much as digits as its factorization.

11618143081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 34.

The spelling of 11618143081 in words is "eleven billion, six hundred eighteen million, one hundred forty-three thousand, eighty-one".