1001111109599 has 2 divisors, whose sum is σ = 1001111109600. Its totient is φ = 1001111109598.

The previous prime is 1001111109589. The next prime is 1001111109643. The reversal of 1001111109599 is 9959011111001.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001111109599 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001111109589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500555554799 + 500555554800.

It is an arithmetic number, because the mean of its divisors is an integer number (500555554800).

Almost surely, 2^{1001111109599} is an apocalyptic number.

1001111109599 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001111109599 is an equidigital number, since it uses as much as digits as its factorization.

1001111109599 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3645, while the sum is 38.

The spelling of 1001111109599 in words is "one trillion, one billion, one hundred eleven million, one hundred nine thousand, five hundred ninety-nine".