12146678943 has 24 divisors (see below), whose sum is σ = 19447488000. Its totient is φ = 6717054960.

The previous prime is 12146678899. The next prime is 12146678969. The reversal of 12146678943 is 34987664121.

It is a happy number.

It is not a de Polignac number, because 12146678943 - 2⁹ = 12146678431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12146676943) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1328193 + ... + 1337306.

It is an arithmetic number, because the mean of its divisors is an integer number (810312000).

Almost surely, 2^12146678943 is an apocalyptic number.

12146678943 is a deficient number, since it is larger than the sum of its proper divisors (7300809057).

12146678943 is a wasteful number, since it uses less digits than its factorization.

12146678943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2665547 (or 2665540 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 51.

The spelling of 12146678943 in words is "twelve billion, one hundred forty-six million, six hundred seventy-eight thousand, nine hundred forty-three".