1171788225117 has 16 divisors (see below), whose sum is σ = 1569464709120. Its totient is φ = 777654210032.

The previous prime is 1171788225107. The next prime is 1171788225131. The reversal of 1171788225117 is 7115228871711.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1171788225117 - 2⁸ = 1171788224861 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1171788225117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1171788225107) 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, 1799968 + ... + 2362934.

It is an arithmetic number, because the mean of its divisors is an integer number (98091544320).

Almost surely, 2^{1171788225117} is an apocalyptic number.

It is an amenable number.

1171788225117 is a deficient number, since it is larger than the sum of its proper divisors (397676484003).

1171788225117 is a wasteful number, since it uses less digits than its factorization.

1171788225117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566112.

The product of its digits is 439040, while the sum is 51.

The spelling of 1171788225117 in words is "one trillion, one hundred seventy-one billion, seven hundred eighty-eight million, two hundred twenty-five thousand, one hundred seventeen".