12405400512026 has 16 divisors (see below), whose sum is σ = 18611533046400. Its totient is φ = 6201556285680.

The previous prime is 12405400511981. The next prime is 12405400512031. The reversal of 12405400512026 is 62021500450421.

It is a junction number, because it is equal to n+sod(n) for n = 12405400511983 and 12405400512001.

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, 414645620 + ... + 414675536.

It is an arithmetic number, because the mean of its divisors is an integer number (1163220815400).

Almost surely, 2^{12405400512026} is an apocalyptic number.

12405400512026 is a deficient number, since it is larger than the sum of its proper divisors (6206132534374).

12405400512026 is a wasteful number, since it uses less digits than its factorization.

12405400512026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61229.

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 12405400512026 its reverse (62021500450421), we get a palindrome (74426900962447).

The spelling of 12405400512026 in words is "twelve trillion, four hundred five billion, four hundred million, five hundred twelve thousand, twenty-six".