12017775256 has 16 divisors (see below), whose sum is σ = 22551771600. Its totient is φ = 6003969504.

The previous prime is 12017775251. The next prime is 12017775277. The reversal of 12017775256 is 65257771021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12017775251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 604371 + ... + 623938.

It is an arithmetic number, because the mean of its divisors is an integer number (1409485725).

Almost surely, 2^12017775256 is an apocalyptic number.

It is an amenable number.

12017775256 is a deficient number, since it is larger than the sum of its proper divisors (10533996344).

12017775256 is a wasteful number, since it uses less digits than its factorization.

12017775256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229538 (or 1229534 counting only the distinct ones).

The product of its (nonzero) digits is 205800, while the sum is 43.

The spelling of 12017775256 in words is "twelve billion, seventeen million, seven hundred seventy-five thousand, two hundred fifty-six".