12639220682 has 16 divisors (see below), whose sum is σ = 21581595072. Its totient is φ = 5495313120.

The previous prime is 12639220669. The next prime is 12639220687. The reversal of 12639220682 is 28602293621.

It is not an unprimeable number, because it can be changed into a prime (12639220687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12488843 + ... + 12489854.

It is an arithmetic number, because the mean of its divisors is an integer number (1348849692).

Almost surely, 2^12639220682 is an apocalyptic number.

12639220682 is a deficient number, since it is larger than the sum of its proper divisors (8942374390).

12639220682 is a wasteful number, since it uses less digits than its factorization.

12639220682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24978733.

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 12639220682 in words is "twelve billion, six hundred thirty-nine million, two hundred twenty thousand, six hundred eighty-two".