13011051491 has 2 divisors, whose sum is σ = 13011051492. Its totient is φ = 13011051490.

The previous prime is 13011051481. The next prime is 13011051503. The reversal of 13011051491 is 19415011031.

13011051491 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 not a de Polignac number, because 13011051491 - 2¹⁸ = 13010789347 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13011051491.

It is not a weakly prime, because it can be changed into another prime (13011051481) 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, 6505525745 + 6505525746.

It is an arithmetic number, because the mean of its divisors is an integer number (6505525746).

Almost surely, 2^13011051491 is an apocalyptic number.

13011051491 is a deficient number, since it is larger than the sum of its proper divisors (1).

13011051491 is an equidigital number, since it uses as much as digits as its factorization.

13011051491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 26.

The spelling of 13011051491 in words is "thirteen billion, eleven million, fifty-one thousand, four hundred ninety-one".