11807516081 has 2 divisors, whose sum is σ = 11807516082. Its totient is φ = 11807516080.

The previous prime is 11807516059. The next prime is 11807516089. The reversal of 11807516081 is 18061570811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11797435456 + 10080625 = 108616^2 + 3175^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11807516081 is a prime.

It is a super-2 number, since 2×11807516081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11807516089) 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, 5903758040 + 5903758041.

It is an arithmetic number, because the mean of its divisors is an integer number (5903758041).

Almost surely, 2^11807516081 is an apocalyptic number.

It is an amenable number.

11807516081 is a deficient number, since it is larger than the sum of its proper divisors (1).

11807516081 is an equidigital number, since it uses as much as digits as its factorization.

11807516081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 38.

The spelling of 11807516081 in words is "eleven billion, eight hundred seven million, five hundred sixteen thousand, eighty-one".