12518497678 has 8 divisors (see below), whose sum is σ = 18897350472. Its totient is φ = 6219380856.

The previous prime is 12518497631. The next prime is 12518497697. The reversal of 12518497678 is 87679481521.

12518497678 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.

It is a super-2 number, since 2×12518497678² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 19933600 + ... + 19934227.

It is an arithmetic number, because the mean of its divisors is an integer number (2362168809).

Almost surely, 2^12518497678 is an apocalyptic number.

12518497678 is a deficient number, since it is larger than the sum of its proper divisors (6378852794).

12518497678 is a wasteful number, since it uses less digits than its factorization.

12518497678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39867986.

The product of its digits is 6773760, while the sum is 58.

The spelling of 12518497678 in words is "twelve billion, five hundred eighteen million, four hundred ninety-seven thousand, six hundred seventy-eight".