11594778660 has 72 divisors (see below), whose sum is σ = 35258755896. Its totient is φ = 3084211200.

The previous prime is 11594778647. The next prime is 11594778661. The reversal of 11594778660 is 6687749511.

It can be written as a sum of positive squares in 4 ways, for example, as 2267854884 + 9326923776 = 47622^2 + 96576^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11594778597 and 11594778606.

It is not an unprimeable number, because it can be changed into a prime (11594778661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8139 + ... + 152498.

It is an arithmetic number, because the mean of its divisors is an integer number (489704943).

Almost surely, 2^11594778660 is an apocalyptic number.

11594778660 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 11594778660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17629377948).

11594778660 is an abundant number, since it is smaller than the sum of its proper divisors (23663977236).

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

11594778660 is a wasteful number, since it uses less digits than its factorization.

11594778660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161053 (or 161048 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 54.

The spelling of 11594778660 in words is "eleven billion, five hundred ninety-four million, seven hundred seventy-eight thousand, six hundred sixty".