1191174966872 has 32 divisors (see below), whose sum is σ = 2443855320000. Its totient is φ = 539807373600.

The previous prime is 1191174966869. The next prime is 1191174966967. The reversal of 1191174966872 is 2786694711911.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20418122 + ... + 20476377.

It is an arithmetic number, because the mean of its divisors is an integer number (76370478750).

Almost surely, 2^{1191174966872} is an apocalyptic number.

It is an amenable number.

1191174966872 is an abundant number, since it is smaller than the sum of its proper divisors (1252680353128).

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

1191174966872 is a wasteful number, since it uses less digits than its factorization.

1191174966872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40894847 (or 40894843 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 62.

The spelling of 1191174966872 in words is "one trillion, one hundred ninety-one billion, one hundred seventy-four million, nine hundred sixty-six thousand, eight hundred seventy-two".