11488766520 has 128 divisors (see below), whose sum is σ = 42971005440. Its totient is φ = 2387274240.

The previous prime is 11488766519. The next prime is 11488766521. The reversal of 11488766520 is 2566788411.

It is an interprime number because it is at equal distance from previous prime (11488766519) and next prime (11488766521).

It is a self number, because there is not a number n which added to its sum of digits gives 11488766520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11488766521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 612447 + ... + 630926.

It is an arithmetic number, because the mean of its divisors is an integer number (335710980).

Almost surely, 2^11488766520 is an apocalyptic number.

11488766520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11488766520 is an abundant number, since it is smaller than the sum of its proper divisors (31482238920).

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

11488766520 is a wasteful number, since it uses less digits than its factorization.

11488766520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243405 (or 1243401 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 11488766520 in words is "eleven billion, four hundred eighty-eight million, seven hundred sixty-six thousand, five hundred twenty".