11616515020 has 48 divisors (see below), whose sum is σ = 26643865248. Its totient is φ = 4219189760.

The previous prime is 11616514981. The next prime is 11616515041. The reversal of 11616515020 is 2051561611.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 11616515020.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157734 + ... + 219346.

It is an arithmetic number, because the mean of its divisors is an integer number (555080526).

Almost surely, 2^11616515020 is an apocalyptic number.

11616515020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11616515020 is an abundant number, since it is smaller than the sum of its proper divisors (15027350228).

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

11616515020 is a wasteful number, since it uses less digits than its factorization.

11616515020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62490 (or 62488 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 28.

The spelling of 11616515020 in words is "eleven billion, six hundred sixteen million, five hundred fifteen thousand, twenty".