12501215646 has 8 divisors (see below), whose sum is σ = 25002431304. Its totient is φ = 4167071880.

The previous prime is 12501215611. The next prime is 12501215647. The reversal of 12501215646 is 64651210521.

12501215646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

12501215646 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12501215647) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1041767965 + ... + 1041767976.

It is an arithmetic number, because the mean of its divisors is an integer number (3125303913).

Almost surely, 2^12501215646 is an apocalyptic number.

12501215646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12501215646 is a wasteful number, since it uses less digits than its factorization.

12501215646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2083535946.

The product of its (nonzero) digits is 14400, while the sum is 33.

The spelling of 12501215646 in words is "twelve billion, five hundred one million, two hundred fifteen thousand, six hundred forty-six".