11840664528 has 240 divisors, whose sum is σ = 41537912832. Its totient is φ = 3058848000.

The previous prime is 11840664469. The next prime is 11840664529. The reversal of 11840664528 is 82546604811.

It is a happy number.

11840664528 is a `hidden beast` number, since 118 + 4 + 0 + 6 + 6 + 4 + 528 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11840664529) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2115013 + ... + 2120603.

Almost surely, 2^11840664528 is an apocalyptic number.

11840664528 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11840664528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20768956416).

11840664528 is an abundant number, since it is smaller than the sum of its proper divisors (29697248304).

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

11840664528 is a wasteful number, since it uses less digits than its factorization.

11840664528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5814 (or 5805 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 11840664528 in words is "eleven billion, eight hundred forty million, six hundred sixty-four thousand, five hundred twenty-eight".