12646011718 has 4 divisors (see below), whose sum is σ = 18969017580. Its totient is φ = 6323005858.

The previous prime is 12646011709. The next prime is 12646011727. The reversal of 12646011718 is 81711064621.

12646011718 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (12646011709) and next prime (12646011727).

It is a super-2 number, since 2×12646011718² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3161502928 + ... + 3161502931.

It is an arithmetic number, because the mean of its divisors is an integer number (4742254395).

Almost surely, 2^12646011718 is an apocalyptic number.

12646011718 is a deficient number, since it is larger than the sum of its proper divisors (6323005862).

12646011718 is an equidigital number, since it uses as much as digits as its factorization.

12646011718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6323005861.

The product of its (nonzero) digits is 16128, while the sum is 37.

The spelling of 12646011718 in words is "twelve billion, six hundred forty-six million, eleven thousand, seven hundred eighteen".