11111100947 has 2 divisors, whose sum is σ = 11111100948. Its totient is φ = 11111100946.

The previous prime is 11111100929. The next prime is 11111100961. The reversal of 11111100947 is 74900111111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11111100947 - 2⁶ = 11111100883 is a prime.

It is not a weakly prime, because it can be changed into another prime (11111100967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555550473 + 5555550474.

It is an arithmetic number, because the mean of its divisors is an integer number (5555550474).

Almost surely, 2^11111100947 is an apocalyptic number.

11111100947 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111100947 is an equidigital number, since it uses as much as digits as its factorization.

11111100947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 26.

The spelling of 11111100947 in words is "eleven billion, one hundred eleven million, one hundred thousand, nine hundred forty-seven".