12654943436 has 24 divisors (see below), whose sum is σ = 23119998720. Its totient is φ = 6049490832.

The previous prime is 12654943421. The next prime is 12654943439. The reversal of 12654943436 is 63434945621.

12654943436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (12654943439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168905 + ... + 232031.

It is an arithmetic number, because the mean of its divisors is an integer number (963333280).

Almost surely, 2^12654943436 is an apocalyptic number.

It is an amenable number.

12654943436 is a deficient number, since it is larger than the sum of its proper divisors (10465055284).

12654943436 is a wasteful number, since it uses less digits than its factorization.

12654943436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65333 (or 65331 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 47.

The spelling of 12654943436 in words is "twelve billion, six hundred fifty-four million, nine hundred forty-three thousand, four hundred thirty-six".