1191112656000 has 256 divisors, whose sum is σ = 3954144729600. Its totient is φ = 317179084800.

The previous prime is 1191112655987. The next prime is 1191112656049. The reversal of 1191112656000 is 6562111911.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34494744 + ... + 34529256.

It is an arithmetic number, because the mean of its divisors is an integer number (15445877850).

Almost surely, 2^{1191112656000} is an apocalyptic number.

1191112656000 is a gapful number since it is divisible by the number (10) 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 1191112656000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1977072364800).

1191112656000 is an abundant number, since it is smaller than the sum of its proper divisors (2763032073600).

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

1191112656000 is an equidigital number, since it uses as much as digits as its factorization.

1191112656000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35264 (or 35242 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 33.

Adding to 1191112656000 its reverse (6562111911), we get a palindrome (1197674767911).

The spelling of 1191112656000 in words is "one trillion, one hundred ninety-one billion, one hundred twelve million, six hundred fifty-six thousand".