1091891676960 has 480 divisors, whose sum is σ = 4546038131712. Its totient is φ = 241523804160.

The previous prime is 1091891676917. The next prime is 1091891677013. The reversal of 1091891676960 is 696761981901.

1091891676960 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2618194 + ... + 3006446.

Almost surely, 2^{1091891676960} is an apocalyptic number.

1091891676960 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 1091891676960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2273019065856).

1091891676960 is an abundant number, since it is smaller than the sum of its proper divisors (3454146454752).

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

1091891676960 is a wasteful number, since it uses less digits than its factorization.

1091891676960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388318 (or 388301 counting only the distinct ones).

The product of its (nonzero) digits is 8817984, while the sum is 63.

The spelling of 1091891676960 in words is "one trillion, ninety-one billion, eight hundred ninety-one million, six hundred seventy-six thousand, nine hundred sixty".