12646040434064 has 10 divisors (see below), whose sum is σ = 24501703341030. Its totient is φ = 6323020217024.

The previous prime is 12646040434037. The next prime is 12646040434091. The reversal of 12646040434064 is 46043404064621.

It is an interprime number because it is at equal distance from previous prime (12646040434037) and next prime (12646040434091).

It can be written as a sum of positive squares in only one way, i.e., 12147734329600 + 498306104464 = 3485360^2 + 705908^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395188763549 + ... + 395188763580.

It is an arithmetic number, because the mean of its divisors is an integer number (2450170334103).

Almost surely, 2^{12646040434064} is an apocalyptic number.

It is an amenable number.

12646040434064 is a deficient number, since it is larger than the sum of its proper divisors (11855662906966).

12646040434064 is an equidigital number, since it uses as much as digits as its factorization.

12646040434064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790377527137 (or 790377527131 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 44.

Adding to 12646040434064 its reverse (46043404064621), we get a palindrome (58689444498685).

The spelling of 12646040434064 in words is "twelve trillion, six hundred forty-six billion, forty million, four hundred thirty-four thousand, sixty-four".