11663503240 has 48 divisors (see below), whose sum is σ = 27116824140. Its totient is φ = 4514889600.

The previous prime is 11663503237. The next prime is 11663503277. The reversal of 11663503240 is 4230536611.

It can be written as a sum of positive squares in 2 ways, for example, as 9342768964 + 2320734276 = 96658^2 + 48174^2 .

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113271 + ... + 190150.

Almost surely, 2^11663503240 is an apocalyptic number.

11663503240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11663503240 is an abundant number, since it is smaller than the sum of its proper divisors (15453320900).

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

11663503240 is a wasteful number, since it uses less digits than its factorization.

11663503240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303494 (or 303459 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The spelling of 11663503240 in words is "eleven billion, six hundred sixty-three million, five hundred three thousand, two hundred forty".