13005511087 has 2 divisors, whose sum is σ = 13005511088. Its totient is φ = 13005511086.

The previous prime is 13005511031. The next prime is 13005511199. The reversal of 13005511087 is 78011550031.

13005511087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13005511087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13005511027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6502755543 + 6502755544.

It is an arithmetic number, because the mean of its divisors is an integer number (6502755544).

Almost surely, 2^13005511087 is an apocalyptic number.

13005511087 is a deficient number, since it is larger than the sum of its proper divisors (1).

13005511087 is an equidigital number, since it uses as much as digits as its factorization.

13005511087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 31.

The spelling of 13005511087 in words is "thirteen billion, five million, five hundred eleven thousand, eighty-seven".