1100056005989 has 2 divisors, whose sum is σ = 1100056005990. Its totient is φ = 1100056005988.

The previous prime is 1100056005901. The next prime is 1100056006031. The reversal of 1100056005989 is 9895006500011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1078139572225 + 21916433764 = 1038335^2 + 148042^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100056005989 - 2⁸ = 1100056005733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1100056005589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550028002994 + 550028002995.

It is an arithmetic number, because the mean of its divisors is an integer number (550028002995).

Almost surely, 2^{1100056005989} is an apocalyptic number.

It is an amenable number.

1100056005989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100056005989 is an equidigital number, since it uses as much as digits as its factorization.

1100056005989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 44.

The spelling of 1100056005989 in words is "one trillion, one hundred billion, fifty-six million, five thousand, nine hundred eighty-nine".