11505121163 has 2 divisors, whose sum is σ = 11505121164. Its totient is φ = 11505121162.

The previous prime is 11505121153. The next prime is 11505121213. The reversal of 11505121163 is 36112150511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11505121163 - 2⁶ = 11505121099 is a prime.

It is not a weakly prime, because it can be changed into another prime (11505121153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5752560581 + 5752560582.

It is an arithmetic number, because the mean of its divisors is an integer number (5752560582).

Almost surely, 2^11505121163 is an apocalyptic number.

11505121163 is a deficient number, since it is larger than the sum of its proper divisors (1).

11505121163 is an equidigital number, since it uses as much as digits as its factorization.

11505121163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 26.

Adding to 11505121163 its reverse (36112150511), we get a palindrome (47617271674).

The spelling of 11505121163 in words is "eleven billion, five hundred five million, one hundred twenty-one thousand, one hundred sixty-three".