11541849481 has 2 divisors, whose sum is σ = 11541849482. Its totient is φ = 11541849480.

The previous prime is 11541849479. The next prime is 11541849499. The reversal of 11541849481 is 18494814511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11518655625 + 23193856 = 107325^2 + 4816^2 .

It is an emirp because it is prime and its reverse (18494814511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11541849481 - 2¹ = 11541849479 is a prime.

It is a super-2 number, since 2×11541849481² (a number of 21 digits) contains 22 as substring.

Together with 11541849479, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11541849181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5770924740 + 5770924741.

It is an arithmetic number, because the mean of its divisors is an integer number (5770924741).

Almost surely, 2^11541849481 is an apocalyptic number.

It is an amenable number.

11541849481 is a deficient number, since it is larger than the sum of its proper divisors (1).

11541849481 is an equidigital number, since it uses as much as digits as its factorization.

11541849481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 184320, while the sum is 46.

The spelling of 11541849481 in words is "eleven billion, five hundred forty-one million, eight hundred forty-nine thousand, four hundred eighty-one".