11539471680 has 448 divisors, whose sum is σ = 46349107200. Its totient is φ = 2675312640.

The previous prime is 11539471663. The next prime is 11539471721. The reversal of 11539471680 is 8617493511.

11539471680 is a `hidden beast` number, since 11 + 539 + 47 + 1 + 68 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2183281 + ... + 2188559.

Almost surely, 2^11539471680 is an apocalyptic number.

11539471680 is a gapful number since it is divisible by the number (10) 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 11539471680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23174553600).

11539471680 is an abundant number, since it is smaller than the sum of its proper divisors (34809635520).

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

11539471680 is a wasteful number, since it uses less digits than its factorization.

11539471680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5339 (or 5323 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 11539471680 in words is "eleven billion, five hundred thirty-nine million, four hundred seventy-one thousand, six hundred eighty".