11547116840 has 64 divisors (see below), whose sum is σ = 30650434560. Its totient is φ = 3831298560.

The previous prime is 11547116821. The next prime is 11547116849. The reversal of 11547116840 is 4861174511.

It is a super-2 number, since 2×11547116840² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11547116794 and 11547116803.

It is not an unprimeable number, because it can be changed into a prime (11547116849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 656477 + ... + 673836.

It is an arithmetic number, because the mean of its divisors is an integer number (478913040).

Almost surely, 2^11547116840 is an apocalyptic number.

11547116840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11547116840 is an abundant number, since it is smaller than the sum of its proper divisors (19103317720).

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

11547116840 is a wasteful number, since it uses less digits than its factorization.

11547116840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330362 (or 1330358 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 38.

The spelling of 11547116840 in words is "eleven billion, five hundred forty-seven million, one hundred sixteen thousand, eight hundred forty".