12640404362 has 16 divisors (see below), whose sum is σ = 19042974720. Its totient is φ = 6292772592.

The previous prime is 12640404347. The next prime is 12640404389. The reversal of 12640404362 is 26340404621.

12640404362 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1172348 + ... + 1183080.

It is an arithmetic number, because the mean of its divisors is an integer number (1190185920).

Almost surely, 2^12640404362 is an apocalyptic number.

12640404362 is a deficient number, since it is larger than the sum of its proper divisors (6402570358).

12640404362 is a wasteful number, since it uses less digits than its factorization.

12640404362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13237.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 12640404362 its reverse (26340404621), we get a palindrome (38980808983).

The spelling of 12640404362 in words is "twelve billion, six hundred forty million, four hundred four thousand, three hundred sixty-two".