12694551350378 has 16 divisors (see below), whose sum is σ = 19077055865280. Its totient is φ = 6335541332736.

The previous prime is 12694551350357. The next prime is 12694551350401. The reversal of 12694551350378 is 87305315549621.

It is a super-2 number, since 2×12694551350378² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 803018 + ... + 5102346.

It is an arithmetic number, because the mean of its divisors is an integer number (1192315991580).

It is a 1-persistent number, because it is pandigital, but 2⋅12694551350378 = 25389102700756 is not.

Almost surely, 2^{12694551350378} is an apocalyptic number.

12694551350378 is a deficient number, since it is larger than the sum of its proper divisors (6382504514902).

12694551350378 is a wasteful number, since it uses less digits than its factorization.

12694551350378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4302061.

The product of its (nonzero) digits is 27216000, while the sum is 59.

Adding to 12694551350378 its reverse (87305315549621), we get a palindrome (99999866899999).

The spelling of 12694551350378 in words is "twelve trillion, six hundred ninety-four billion, five hundred fifty-one million, three hundred fifty thousand, three hundred seventy-eight".