12501563218 has 8 divisors (see below), whose sum is σ = 19070181360. Its totient is φ = 6144836100.

The previous prime is 12501563197. The next prime is 12501563231. The reversal of 12501563218 is 81236510521.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52972608 + ... + 52972843.

It is an arithmetic number, because the mean of its divisors is an integer number (2383772670).

Almost surely, 2^12501563218 is an apocalyptic number.

12501563218 is a deficient number, since it is larger than the sum of its proper divisors (6568618142).

12501563218 is a wasteful number, since it uses less digits than its factorization.

12501563218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105945512.

The product of its (nonzero) digits is 14400, while the sum is 34.

The spelling of 12501563218 in words is "twelve billion, five hundred one million, five hundred sixty-three thousand, two hundred eighteen".