11663153540 has 12 divisors (see below), whose sum is σ = 24492622476. Its totient is φ = 4665261408.

The previous prime is 11663153539. The next prime is 11663153543. The reversal of 11663153540 is 4535136611.

11663153540 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 2 ways, for example, as 8241371524 + 3421782016 = 90782^2 + 58496^2 .

It is a super-2 number, since 2×11663153540² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11663153540.

It is not an unprimeable number, because it can be changed into a prime (11663153543) 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 3 ways as a sum of consecutive naturals, for example, 291578819 + ... + 291578858.

It is an arithmetic number, because the mean of its divisors is an integer number (2041051873).

Almost surely, 2^11663153540 is an apocalyptic number.

11663153540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11663153540 is an abundant number, since it is smaller than the sum of its proper divisors (12829468936).

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

11663153540 is a wasteful number, since it uses less digits than its factorization.

11663153540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583157686 (or 583157684 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 11663153540 in words is "eleven billion, six hundred sixty-three million, one hundred fifty-three thousand, five hundred forty".