1171098989539 has 2 divisors, whose sum is σ = 1171098989540. Its totient is φ = 1171098989538.

The previous prime is 1171098989527. The next prime is 1171098989573. The reversal of 1171098989539 is 9359898901711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1171098989539 - 2¹³ = 1171098981347 is a prime.

It is not a weakly prime, because it can be changed into another prime (1171098989239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 585549494769 + 585549494770.

It is an arithmetic number, because the mean of its divisors is an integer number (585549494770).

Almost surely, 2^{1171098989539} is an apocalyptic number.

1171098989539 is a deficient number, since it is larger than the sum of its proper divisors (1).

1171098989539 is an equidigital number, since it uses as much as digits as its factorization.

1171098989539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44089920, while the sum is 70.

The spelling of 1171098989539 in words is "one trillion, one hundred seventy-one billion, ninety-eight million, nine hundred eighty-nine thousand, five hundred thirty-nine".