12642013216 has 48 divisors (see below), whose sum is σ = 28457303616. Its totient is φ = 5415572736.

The previous prime is 12642013211. The next prime is 12642013231. The reversal of 12642013216 is 61231024621.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (12642013211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 541170 + ... + 564046.

It is an arithmetic number, because the mean of its divisors is an integer number (592860492).

Almost surely, 2^12642013216 is an apocalyptic number.

12642013216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12642013216 is an abundant number, since it is smaller than the sum of its proper divisors (15815290400).

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

12642013216 is a wasteful number, since it uses less digits than its factorization.

12642013216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25361 (or 25353 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 12642013216 its reverse (61231024621), we get a palindrome (73873037837).

The spelling of 12642013216 in words is "twelve billion, six hundred forty-two million, thirteen thousand, two hundred sixteen".