1171098989573 has 2 divisors, whose sum is σ = 1171098989574. Its totient is φ = 1171098989572.

The previous prime is 1171098989539. The next prime is 1171098989633. The reversal of 1171098989573 is 3759898901711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1117572465409 + 53526524164 = 1057153^2 + 231358^2 .

It is a cyclic number.

It is not a de Polignac number, because 1171098989573 - 2³⁰ = 1170025247749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1171098289573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 585549494786 + 585549494787.

It is an arithmetic number, because the mean of its divisors is an integer number (585549494787).

Almost surely, 2^{1171098989573} is an apocalyptic number.

It is an amenable number.

1171098989573 is a deficient number, since it is larger than the sum of its proper divisors (1).

1171098989573 is an equidigital number, since it uses as much as digits as its factorization.

1171098989573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34292160, while the sum is 68.

The spelling of 1171098989573 in words is "one trillion, one hundred seventy-one billion, ninety-eight million, nine hundred eighty-nine thousand, five hundred seventy-three".