11975835220 has 24 divisors (see below), whose sum is σ = 25228602504. Its totient is φ = 4775220096.

The previous prime is 11975835197. The next prime is 11975835227. The reversal of 11975835220 is 2253857911.

It is a happy number.

11975835220 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 4 ways, for example, as 15350724 + 11960484496 = 3918^2 + 109364^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11975835227) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 938127 + ... + 950806.

It is an arithmetic number, because the mean of its divisors is an integer number (1051191771).

Almost surely, 2^11975835220 is an apocalyptic number.

11975835220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11975835220 is an abundant number, since it is smaller than the sum of its proper divisors (13252767284).

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

11975835220 is a wasteful number, since it uses less digits than its factorization.

11975835220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1889259 (or 1889257 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 43.

The spelling of 11975835220 in words is "eleven billion, nine hundred seventy-five million, eight hundred thirty-five thousand, two hundred twenty".