12146640044 has 24 divisors (see below), whose sum is σ = 26501760768. Its totient is φ = 4732457040.

The previous prime is 12146640041. The next prime is 12146640047. The reversal of 12146640044 is 44004664121.

It is an interprime number because it is at equal distance from previous prime (12146640041) and next prime (12146640047).

It is not an unprimeable number, because it can be changed into a prime (12146640041) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 19718264 + ... + 19718879.

It is an arithmetic number, because the mean of its divisors is an integer number (1104240032).

Almost surely, 2^12146640044 is an apocalyptic number.

12146640044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12146640044 is an abundant number, since it is smaller than the sum of its proper divisors (14355120724).

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

12146640044 is a wasteful number, since it uses less digits than its factorization.

12146640044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39437165 (or 39437163 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The spelling of 12146640044 in words is "twelve billion, one hundred forty-six million, six hundred forty thousand, forty-four".