1091313888576 has 112 divisors (see below), whose sum is σ = 2938650122688. Its totient is φ = 357334732800.

The previous prime is 1091313888563. The next prime is 1091313888607. The reversal of 1091313888576 is 6758883131901.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 8851611 + ... + 8974053.

It is an arithmetic number, because the mean of its divisors is an integer number (26237947524).

Almost surely, 2^{1091313888576} is an apocalyptic number.

1091313888576 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 1091313888576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1469325061344).

1091313888576 is an abundant number, since it is smaller than the sum of its proper divisors (1847336234112).

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

1091313888576 is a wasteful number, since it uses less digits than its factorization.

1091313888576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123280 (or 123270 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 60.

The spelling of 1091313888576 in words is "one trillion, ninety-one billion, three hundred thirteen million, eight hundred eighty-eight thousand, five hundred seventy-six".