12632256646 has 8 divisors (see below), whose sum is σ = 19351542240. Its totient is φ = 6181742568.

The previous prime is 12632256643. The next prime is 12632256649. The reversal of 12632256646 is 64665223621.

It is an interprime number because it is at equal distance from previous prime (12632256643) and next prime (12632256649).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12632256646² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12632256643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67192761 + ... + 67192948.

It is an arithmetic number, because the mean of its divisors is an integer number (2418942780).

Almost surely, 2^12632256646 is an apocalyptic number.

12632256646 is a deficient number, since it is larger than the sum of its proper divisors (6719285594).

12632256646 is a wasteful number, since it uses less digits than its factorization.

12632256646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134385758.

The product of its digits is 622080, while the sum is 43.

The spelling of 12632256646 in words is "twelve billion, six hundred thirty-two million, two hundred fifty-six thousand, six hundred forty-six".