1171788196845 has 32 divisors (see below), whose sum is σ = 2145720695040. Its totient is φ = 534919034880.

The previous prime is 1171788196841. The next prime is 1171788196933. The reversal of 1171788196845 is 5486918871711.

It is not a de Polignac number, because 1171788196845 - 2² = 1171788196841 is a prime.

It is a super-3 number, since 3×1171788196845³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1171788196841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7795716 + ... + 7944605.

It is an arithmetic number, because the mean of its divisors is an integer number (67053771720).

Almost surely, 2^{1171788196845} is an apocalyptic number.

1171788196845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1171788196845 is a deficient number, since it is larger than the sum of its proper divisors (973932498195).

1171788196845 is a wasteful number, since it uses less digits than its factorization.

1171788196845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15741045.

The product of its digits is 27095040, while the sum is 66.

The spelling of 1171788196845 in words is "one trillion, one hundred seventy-one billion, seven hundred eighty-eight million, one hundred ninety-six thousand, eight hundred forty-five".