12646534622 has 4 divisors (see below), whose sum is σ = 18969801936. Its totient is φ = 6323267310.

The previous prime is 12646534619. The next prime is 12646534631. The reversal of 12646534622 is 22643564621.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12646534622.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3161633654 + ... + 3161633657.

It is an arithmetic number, because the mean of its divisors is an integer number (4742450484).

Almost surely, 2^12646534622 is an apocalyptic number.

12646534622 is a deficient number, since it is larger than the sum of its proper divisors (6323267314).

12646534622 is an equidigital number, since it uses as much as digits as its factorization.

12646534622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6323267313.

The product of its digits is 414720, while the sum is 41.

The spelling of 12646534622 in words is "twelve billion, six hundred forty-six million, five hundred thirty-four thousand, six hundred twenty-two".