11845349081 has 2 divisors, whose sum is σ = 11845349082. Its totient is φ = 11845349080.

The previous prime is 11845349059. The next prime is 11845349099. The reversal of 11845349081 is 18094354811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7410455056 + 4434894025 = 86084^2 + 66595^2 .

It is a cyclic number.

It is not a de Polignac number, because 11845349081 - 2⁶ = 11845349017 is a prime.

It is a super-2 number, since 2×11845349081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11845349281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5922674540 + 5922674541.

It is an arithmetic number, because the mean of its divisors is an integer number (5922674541).

Almost surely, 2^11845349081 is an apocalyptic number.

It is an amenable number.

11845349081 is a deficient number, since it is larger than the sum of its proper divisors (1).

11845349081 is an equidigital number, since it uses as much as digits as its factorization.

11845349081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 44.

The spelling of 11845349081 in words is "eleven billion, eight hundred forty-five million, three hundred forty-nine thousand, eighty-one".