1191198166798 has 16 divisors (see below), whose sum is σ = 1799937450000. Its totient is φ = 591230713792.

The previous prime is 1191198166771. The next prime is 1191198166801. The reversal of 1191198166798 is 8976618911911.

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, 2720173 + ... + 3127576.

It is an arithmetic number, because the mean of its divisors is an integer number (112496090625).

Almost surely, 2^{1191198166798} is an apocalyptic number.

1191198166798 is a deficient number, since it is larger than the sum of its proper divisors (608739283202).

1191198166798 is a wasteful number, since it uses less digits than its factorization.

1191198166798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5848499.

The product of its digits is 11757312, while the sum is 67.

The spelling of 1191198166798 in words is "one trillion, one hundred ninety-one billion, one hundred ninety-eight million, one hundred sixty-six thousand, seven hundred ninety-eight".