1188648911856 has 160 divisors (see below), whose sum is σ = 3662689287168. Its totient is φ = 324780318720.

The previous prime is 1188648911843. The next prime is 1188648911867. The reversal of 1188648911856 is 6581198468811.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 45249766 + ... + 45276026.

Almost surely, 2^{1188648911856} is an apocalyptic number.

1188648911856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1188648911856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1831344643584).

1188648911856 is an abundant number, since it is smaller than the sum of its proper divisors (2474040375312).

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

1188648911856 is a wasteful number, since it uses less digits than its factorization.

1188648911856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32159 (or 32153 counting only the distinct ones).

The product of its digits is 26542080, while the sum is 66.

The spelling of 1188648911856 in words is "one trillion, one hundred eighty-eight billion, six hundred forty-eight million, nine hundred eleven thousand, eight hundred fifty-six".