11591096868 has 144 divisors (see below), whose sum is σ = 32880912960. Its totient is φ = 3529184256.

The previous prime is 11591096837. The next prime is 11591096879. The reversal of 11591096868 is 86869019511.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1767171 + ... + 1773717.

Almost surely, 2^11591096868 is an apocalyptic number.

11591096868 is a gapful number since it is divisible by the number (18) 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 11591096868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16440456480).

11591096868 is an abundant number, since it is smaller than the sum of its proper divisors (21289816092).

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

11591096868 is a wasteful number, since it uses less digits than its factorization.

11591096868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6683 (or 6662 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 54.

The spelling of 11591096868 in words is "eleven billion, five hundred ninety-one million, ninety-six thousand, eight hundred sixty-eight".