1171997975883 has 32 divisors (see below), whose sum is σ = 1828069157376. Its totient is φ = 653911147008.

The previous prime is 1171997975861. The next prime is 1171997975899. The reversal of 1171997975883 is 3885797991711.

It is not a de Polignac number, because 1171997975883 - 2⁹ = 1171997975371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1171997975983) 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 31 ways as a sum of consecutive naturals, for example, 2391985 + ... + 2839997.

It is an arithmetic number, because the mean of its divisors is an integer number (57127161168).

Almost surely, 2^{1171997975883} is an apocalyptic number.

1171997975883 is a deficient number, since it is larger than the sum of its proper divisors (656071181493).

1171997975883 is a wasteful number, since it uses less digits than its factorization.

1171997975883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450963.

The product of its digits is 240045120, while the sum is 75.

The spelling of 1171997975883 in words is "one trillion, one hundred seventy-one billion, nine hundred ninety-seven million, nine hundred seventy-five thousand, eight hundred eighty-three".