1191117254108 has 18 divisors (see below), whose sum is σ = 2088817570056. Its totient is φ = 594314831704.

The previous prime is 1191117254087. The next prime is 1191117254189. The reversal of 1191117254108 is 8014527111911.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 268841 + ... + 1566687.

Almost surely, 2^{1191117254108} is an apocalyptic number.

It is an amenable number.

1191117254108 is a deficient number, since it is larger than the sum of its proper divisors (897700315948).

1191117254108 is an equidigital number, since it uses as much as digits as its factorization.

1191117254108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298809 (or 1298328 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 41.

The spelling of 1191117254108 in words is "one trillion, one hundred ninety-one billion, one hundred seventeen million, two hundred fifty-four thousand, one hundred eight".