20344545601256 has 32 divisors (see below), whose sum is σ = 38200823964000. Its totient is φ = 10157669373120.

The previous prime is 20344545601223. The next prime is 20344545601283. The reversal of 20344545601256 is 65210654544302.

It is a self number, because there is not a number n which added to its sum of digits gives 20344545601256.

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, 15418451 + ... + 16685853.

It is an arithmetic number, because the mean of its divisors is an integer number (1193775748875).

Almost surely, 2^{20344545601256} is an apocalyptic number.

It is an amenable number.

20344545601256 is a deficient number, since it is larger than the sum of its proper divisors (17856278362744).

20344545601256 is a wasteful number, since it uses less digits than its factorization.

20344545601256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270289 (or 1270285 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 47.

The spelling of 20344545601256 in words is "twenty trillion, three hundred forty-four billion, five hundred forty-five million, six hundred one thousand, two hundred fifty-six".