1171718312028 has 48 divisors (see below), whose sum is σ = 3112232046336. Its totient is φ = 339628495360.

The previous prime is 1171718312021. The next prime is 1171718312057. The reversal of 1171718312028 is 8202138171711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1171718312021) 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 15 ways as a sum of consecutive naturals, for example, 192967701 + ... + 192973772.

It is an arithmetic number, because the mean of its divisors is an integer number (64838167632).

Almost surely, 2^{1171718312028} is an apocalyptic number.

It is an amenable number.

1171718312028 is an abundant number, since it is smaller than the sum of its proper divisors (1940513734308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1171718312028 is a wasteful number, since it uses less digits than its factorization.

1171718312028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385941514 (or 385941512 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 42.

The spelling of 1171718312028 in words is "one trillion, one hundred seventy-one billion, seven hundred eighteen million, three hundred twelve thousand, twenty-eight".