11115434947 has 2 divisors, whose sum is σ = 11115434948. Its totient is φ = 11115434946.

The previous prime is 11115434899. The next prime is 11115434959. The reversal of 11115434947 is 74943451111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11115434947 - 2¹¹ = 11115432899 is a prime.

It is not a weakly prime, because it can be changed into another prime (11115434347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5557717473 + 5557717474.

It is an arithmetic number, because the mean of its divisors is an integer number (5557717474).

Almost surely, 2^11115434947 is an apocalyptic number.

11115434947 is a deficient number, since it is larger than the sum of its proper divisors (1).

11115434947 is an equidigital number, since it uses as much as digits as its factorization.

11115434947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 40.

The spelling of 11115434947 in words is "eleven billion, one hundred fifteen million, four hundred thirty-four thousand, nine hundred forty-seven".