11890804896 has 72 divisors (see below), whose sum is σ = 33922767060. Its totient is φ = 3950908416.

The previous prime is 11890804879. The next prime is 11890804909. The reversal of 11890804896 is 69840809811.

11890804896 is a `hidden beast` number, since 1 + 1 + 89 + 0 + 80 + 489 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11270794896 + 620010000 = 106164^2 + 24900^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24190 + ... + 156098.

Almost surely, 2^11890804896 is an apocalyptic number.

11890804896 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 11890804896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16961383530).

11890804896 is an abundant number, since it is smaller than the sum of its proper divisors (22031962164).

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

11890804896 is a wasteful number, since it uses less digits than its factorization.

11890804896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132238 (or 132227 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 54.

The spelling of 11890804896 in words is "eleven billion, eight hundred ninety million, eight hundred four thousand, eight hundred ninety-six".