11528689662 has 80 divisors (see below), whose sum is σ = 29569921920. Its totient is φ = 3288699792.

The previous prime is 11528689661. The next prime is 11528689663. The reversal of 11528689662 is 26698682511.

It is an interprime number because it is at equal distance from previous prime (11528689661) and next prime (11528689663).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 11528689599 and 11528689608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11528689661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 739593 + ... + 755019.

It is an arithmetic number, because the mean of its divisors is an integer number (369624024).

Almost surely, 2^11528689662 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11528689662, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14784960960).

11528689662 is an abundant number, since it is smaller than the sum of its proper divisors (18041232258).

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

11528689662 is a wasteful number, since it uses less digits than its factorization.

11528689662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16107 (or 16098 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The spelling of 11528689662 in words is "eleven billion, five hundred twenty-eight million, six hundred eighty-nine thousand, six hundred sixty-two".