1191171625198 has 16 divisors (see below), whose sum is σ = 1791190087920. Its totient is φ = 594110088000.

The previous prime is 1191171625177. The next prime is 1191171625201. The reversal of 1191171625198 is 8915261711911.

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, 851848 + ... + 1762948.

It is an arithmetic number, because the mean of its divisors is an integer number (111949380495).

Almost surely, 2^{1191171625198} is an apocalyptic number.

1191171625198 is a deficient number, since it is larger than the sum of its proper divisors (600018462722).

1191171625198 is an equidigital number, since it uses as much as digits as its factorization.

1191171625198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912723.

The product of its digits is 272160, while the sum is 52.

The spelling of 1191171625198 in words is "one trillion, one hundred ninety-one billion, one hundred seventy-one million, six hundred twenty-five thousand, one hundred ninety-eight".