11787454580 has 54 divisors (see below), whose sum is σ = 27220896402. Its totient is φ = 4284404960.

The previous prime is 11787454573. The next prime is 11787454607. The reversal of 11787454580 is 8545478711.

It is a happy number.

11787454580 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9429963664 + 2357490916 = 97108^2 + 48554^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5339837 + ... + 5342043.

Almost surely, 2^11787454580 is an apocalyptic number.

11787454580 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 11787454580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13610448201).

11787454580 is an abundant number, since it is smaller than the sum of its proper divisors (15433441822).

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

11787454580 is an equidigital number, since it uses as much as digits as its factorization.

11787454580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4445 (or 2225 counting only the distinct ones).

The product of its (nonzero) digits is 1254400, while the sum is 50.

The spelling of 11787454580 in words is "eleven billion, seven hundred eighty-seven million, four hundred fifty-four thousand, five hundred eighty".