11115999473 has 2 divisors, whose sum is σ = 11115999474. Its totient is φ = 11115999472.

The previous prime is 11115999463. The next prime is 11115999481. The reversal of 11115999473 is 37499951111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9702841009 + 1413158464 = 98503^2 + 37592^2 .

It is a cyclic number.

It is not a de Polignac number, because 11115999473 - 2⁶ = 11115999409 is a prime.

It is not a weakly prime, because it can be changed into another prime (11115999443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5557999736 + 5557999737.

It is an arithmetic number, because the mean of its divisors is an integer number (5557999737).

Almost surely, 2^11115999473 is an apocalyptic number.

It is an amenable number.

11115999473 is a deficient number, since it is larger than the sum of its proper divisors (1).

11115999473 is an equidigital number, since it uses as much as digits as its factorization.

11115999473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 306180, while the sum is 50.

The spelling of 11115999473 in words is "eleven billion, one hundred fifteen million, nine hundred ninety-nine thousand, four hundred seventy-three".