11505161147 has 2 divisors, whose sum is σ = 11505161148. Its totient is φ = 11505161146.

The previous prime is 11505161123. The next prime is 11505161149. The reversal of 11505161147 is 74116150511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11505161147 - 2¹⁰ = 11505160123 is a prime.

Together with 11505161149, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11505161149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5752580573 + 5752580574.

It is an arithmetic number, because the mean of its divisors is an integer number (5752580574).

Almost surely, 2^11505161147 is an apocalyptic number.

11505161147 is a deficient number, since it is larger than the sum of its proper divisors (1).

11505161147 is an equidigital number, since it uses as much as digits as its factorization.

11505161147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 32.

The spelling of 11505161147 in words is "eleven billion, five hundred five million, one hundred sixty-one thousand, one hundred forty-seven".