11536647540 has 96 divisors (see below), whose sum is σ = 35373735936. Its totient is φ = 2786087040.

The previous prime is 11536647539. The next prime is 11536647599. The reversal of 11536647540 is 4574663511.

It is a junction number, because it is equal to n+sod(n) for n = 11536647492 and 11536647501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 140349 + ... + 206811.

It is an arithmetic number, because the mean of its divisors is an integer number (368476416).

Almost surely, 2^11536647540 is an apocalyptic number.

11536647540 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 11536647540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17686867968).

11536647540 is an abundant number, since it is smaller than the sum of its proper divisors (23837088396).

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

11536647540 is a wasteful number, since it uses less digits than its factorization.

11536647540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66749 (or 66747 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 42.

The spelling of 11536647540 in words is "eleven billion, five hundred thirty-six million, six hundred forty-seven thousand, five hundred forty".