12555212636402 has 8 divisors (see below), whose sum is σ = 18832898900700. Its totient is φ = 6277579669504.

The previous prime is 12555212636399. The next prime is 12555212636431. The reversal of 12555212636402 is 20463621255521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12108319049401 + 446893587001 = 3479701^2 + 668501^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12730127 + ... + 13680882.

Almost surely, 2^{12555212636402} is an apocalyptic number.

12555212636402 is a deficient number, since it is larger than the sum of its proper divisors (6277686264298).

12555212636402 is a wasteful number, since it uses less digits than its factorization.

12555212636402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26648700.

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 12555212636402 in words is "twelve trillion, five hundred fifty-five billion, two hundred twelve million, six hundred thirty-six thousand, four hundred two".