12015789412 has 48 divisors (see below), whose sum is σ = 23194672704. Its totient is φ = 5401040000.

The previous prime is 12015789407. The next prime is 12015789419. The reversal of 12015789412 is 21498751021.

It is not an unprimeable number, because it can be changed into a prime (12015789419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6633987 + ... + 6635797.

It is an arithmetic number, because the mean of its divisors is an integer number (483222348).

Almost surely, 2^12015789412 is an apocalyptic number.

It is an amenable number.

12015789412 is a deficient number, since it is larger than the sum of its proper divisors (11178883292).

12015789412 is a wasteful number, since it uses less digits than its factorization.

12015789412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3420 (or 3418 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 40.

The spelling of 12015789412 in words is "twelve billion, fifteen million, seven hundred eighty-nine thousand, four hundred twelve".