1171959392545 has 16 divisors (see below), whose sum is σ = 1458056862720. Its totient is φ = 903361262400.

The previous prime is 1171959392543. The next prime is 1171959392573. The reversal of 1171959392545 is 5452939591711.

It is not a de Polignac number, because 1171959392545 - 2¹ = 1171959392543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1171959392543) 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 in 15 ways as a sum of consecutive naturals, for example, 16473301 + ... + 16544290.

It is an arithmetic number, because the mean of its divisors is an integer number (91128553920).

Almost surely, 2^{1171959392545} is an apocalyptic number.

It is an amenable number.

1171959392545 is a deficient number, since it is larger than the sum of its proper divisors (286097470175).

1171959392545 is a wasteful number, since it uses less digits than its factorization.

1171959392545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33017856.

The product of its digits is 15309000, while the sum is 61.

The spelling of 1171959392545 in words is "one trillion, one hundred seventy-one billion, nine hundred fifty-nine million, three hundred ninety-two thousand, five hundred forty-five".