12643526752 has 12 divisors (see below), whose sum is σ = 24891943356. Its totient is φ = 6321763360.

The previous prime is 12643526737. The next prime is 12643526767. The reversal of 12643526752 is 25762534621.

It is an interprime number because it is at equal distance from previous prime (12643526737) and next prime (12643526767).

It is a junction number, because it is equal to n+sod(n) for n = 12643526699 and 12643526708.

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, 197555074 + ... + 197555137.

It is an arithmetic number, because the mean of its divisors is an integer number (2074328613).

Almost surely, 2^12643526752 is an apocalyptic number.

It is an amenable number.

12643526752 is a deficient number, since it is larger than the sum of its proper divisors (12248416604).

12643526752 is an equidigital number, since it uses as much as digits as its factorization.

12643526752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395110221 (or 395110213 counting only the distinct ones).

The product of its digits is 604800, while the sum is 43.

The spelling of 12643526752 in words is "twelve billion, six hundred forty-three million, five hundred twenty-six thousand, seven hundred fifty-two".