12420168404138 has 16 divisors (see below), whose sum is σ = 21393591510240. Its totient is φ = 5348397877200.

The previous prime is 12420168404117. The next prime is 12420168404153. The reversal of 12420168404138 is 83140486102421.

It is a super-3 number, since 3×12420168404138³ (a number of 40 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14856660353 + ... + 14856661188.

It is an arithmetic number, because the mean of its divisors is an integer number (1337099469390).

Almost surely, 2^{12420168404138} is an apocalyptic number.

12420168404138 is a deficient number, since it is larger than the sum of its proper divisors (8973423106102).

12420168404138 is a wasteful number, since it uses less digits than its factorization.

12420168404138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29713321573.

The product of its (nonzero) digits is 294912, while the sum is 44.

The spelling of 12420168404138 in words is "twelve trillion, four hundred twenty billion, one hundred sixty-eight million, four hundred four thousand, one hundred thirty-eight".