12040539816 has 32 divisors (see below), whose sum is σ = 31872018240. Its totient is φ = 3777424128.

The previous prime is 12040539769. The next prime is 12040539829. The reversal of 12040539816 is 61893504021.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14755156 + ... + 14755971.

It is an arithmetic number, because the mean of its divisors is an integer number (996000570).

Almost surely, 2^12040539816 is an apocalyptic number.

It is an amenable number.

12040539816 is an abundant number, since it is smaller than the sum of its proper divisors (19831478424).

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

12040539816 is a wasteful number, since it uses less digits than its factorization.

12040539816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29511153 (or 29511149 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The spelling of 12040539816 in words is "twelve billion, forty million, five hundred thirty-nine thousand, eight hundred sixteen".