12646341644 has 6 divisors (see below), whose sum is σ = 22131097884. Its totient is φ = 6323170820.

The previous prime is 12646341641. The next prime is 12646341649. The reversal of 12646341644 is 44614364621.

It is not an unprimeable number, because it can be changed into a prime (12646341641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1580792702 + ... + 1580792709.

It is an arithmetic number, because the mean of its divisors is an integer number (3688516314).

Almost surely, 2^12646341644 is an apocalyptic number.

It is an amenable number.

12646341644 is a deficient number, since it is larger than the sum of its proper divisors (9484756240).

12646341644 is a wasteful number, since it uses less digits than its factorization.

12646341644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3161585415 (or 3161585413 counting only the distinct ones).

The product of its digits is 331776, while the sum is 41.

The spelling of 12646341644 in words is "twelve billion, six hundred forty-six million, three hundred forty-one thousand, six hundred forty-four".