11663145320 has 16 divisors (see below), whose sum is σ = 26242077060. Its totient is φ = 4665258112.

The previous prime is 11663145317. The next prime is 11663145337. The reversal of 11663145320 is 2354136611.

It can be written as a sum of positive squares in 2 ways, for example, as 10030823716 + 1632321604 = 100154^2 + 40402^2 .

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 3 ways as a sum of consecutive naturals, for example, 145789277 + ... + 145789356.

Almost surely, 2^11663145320 is an apocalyptic number.

11663145320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11663145320 is an abundant number, since it is smaller than the sum of its proper divisors (14578931740).

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

11663145320 is a wasteful number, since it uses less digits than its factorization.

11663145320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291578644 (or 291578640 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 11663145320 in words is "eleven billion, six hundred sixty-three million, one hundred forty-five thousand, three hundred twenty".