12256801222478 has 8 divisors (see below), whose sum is σ = 18385217248320. Its totient is φ = 6128395473040.

The previous prime is 12256801222453. The next prime is 12256801222483. The reversal of 12256801222478 is 87422210865221.

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

It is a congruent number.

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, 2136323 + ... + 5392353.

It is an arithmetic number, because the mean of its divisors is an integer number (2298152156040).

Almost surely, 2^{12256801222478} is an apocalyptic number.

12256801222478 is a deficient number, since it is larger than the sum of its proper divisors (6128416025842).

12256801222478 is a wasteful number, since it uses less digits than its factorization.

12256801222478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5138202.

The product of its (nonzero) digits is 1720320, while the sum is 50.

The spelling of 12256801222478 in words is "twelve trillion, two hundred fifty-six billion, eight hundred one million, two hundred twenty-two thousand, four hundred seventy-eight".