1110051565991 has 2 divisors, whose sum is σ = 1110051565992. Its totient is φ = 1110051565990.

The previous prime is 1110051565967. The next prime is 1110051566011. The reversal of 1110051565991 is 1995651500111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1110051565991 - 2⁶ = 1110051565927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1110051565921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555025782995 + 555025782996.

It is an arithmetic number, because the mean of its divisors is an integer number (555025782996).

Almost surely, 2^{1110051565991} is an apocalyptic number.

1110051565991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1110051565991 is an equidigital number, since it uses as much as digits as its factorization.

1110051565991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60750, while the sum is 44.

The spelling of 1110051565991 in words is "one trillion, one hundred ten billion, fifty-one million, five hundred sixty-five thousand, nine hundred ninety-one".