256205042004603 has 8 divisors (see below), whose sum is σ = 350839336799248. Its totient is φ = 166187054273184.

The previous prime is 256205042004539. The next prime is 256205042004629. The reversal of 256205042004603 is 306400240502652.

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

It is not a de Polignac number, because 256205042004603 - 2⁶ = 256205042004539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256205042004403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1154076765676 + ... + 1154076765897.

It is an arithmetic number, because the mean of its divisors is an integer number (43854917099906).

Almost surely, 2^{256205042004603} is an apocalyptic number.

256205042004603 is a deficient number, since it is larger than the sum of its proper divisors (94634294794645).

256205042004603 is a wasteful number, since it uses less digits than its factorization.

256205042004603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2308153531613.

The product of its (nonzero) digits is 345600, while the sum is 39.

The spelling of 256205042004603 in words is "two hundred fifty-six trillion, two hundred five billion, forty-two million, four thousand, six hundred three".