11461515491 has 2 divisors, whose sum is σ = 11461515492. Its totient is φ = 11461515490.

The previous prime is 11461515463. The next prime is 11461515511. The reversal of 11461515491 is 19451516411.

11461515491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11461515491 - 2¹⁴ = 11461499107 is a prime.

It is not a weakly prime, because it can be changed into another prime (11461518491) 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, 5730757745 + 5730757746.

It is an arithmetic number, because the mean of its divisors is an integer number (5730757746).

Almost surely, 2^11461515491 is an apocalyptic number.

11461515491 is a deficient number, since it is larger than the sum of its proper divisors (1).

11461515491 is an equidigital number, since it uses as much as digits as its factorization.

11461515491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 38.

The spelling of 11461515491 in words is "eleven billion, four hundred sixty-one million, five hundred fifteen thousand, four hundred ninety-one".