12688057198 has 4 divisors (see below), whose sum is σ = 19032085800. Its totient is φ = 6344028598.

The previous prime is 12688057181. The next prime is 12688057211. The reversal of 12688057198 is 89175088621.

12688057198 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89175088621 = 152441 ⋅584981.

It is a super-2 number, since 2×12688057198² (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 as a sum of consecutive naturals, namely, 3172014298 + ... + 3172014301.

It is an arithmetic number, because the mean of its divisors is an integer number (4758021450).

Almost surely, 2^12688057198 is an apocalyptic number.

12688057198 is a deficient number, since it is larger than the sum of its proper divisors (6344028602).

12688057198 is an equidigital number, since it uses as much as digits as its factorization.

12688057198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6344028601.

The product of its (nonzero) digits is 1935360, while the sum is 55.

It can be divided in two parts, 1268805 and 7198, that added together give a triangular number (1276003 = T₁₅₉₇).

The spelling of 12688057198 in words is "twelve billion, six hundred eighty-eight million, fifty-seven thousand, one hundred ninety-eight".