1111105815923 has 2 divisors, whose sum is σ = 1111105815924. Its totient is φ = 1111105815922.

The previous prime is 1111105815907. The next prime is 1111105815947. The reversal of 1111105815923 is 3295185011111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1111105815923 - 2⁴ = 1111105815907 is a prime.

It is a super-2 number, since 2×1111105815923² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1111105815023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555552907961 + 555552907962.

It is an arithmetic number, because the mean of its divisors is an integer number (555552907962).

Almost surely, 2^{1111105815923} is an apocalyptic number.

1111105815923 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111105815923 is an equidigital number, since it uses as much as digits as its factorization.

1111105815923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 38.

The spelling of 1111105815923 in words is "one trillion, one hundred eleven billion, one hundred five million, eight hundred fifteen thousand, nine hundred twenty-three".