256199341601 has 8 divisors (see below), whose sum is σ = 296923181184. Its totient is φ = 216506485440.

The previous prime is 256199341577. The next prime is 256199341661. The reversal of 256199341601 is 106143991652.

It is a happy number.

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

It is not a de Polignac number, because 256199341601 - 2²⁶ = 256132232737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256199341661) 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, 257745320 + ... + 257746313.

It is an arithmetic number, because the mean of its divisors is an integer number (37115397648).

Almost surely, 2^256199341601 is an apocalyptic number.

It is an amenable number.

256199341601 is a deficient number, since it is larger than the sum of its proper divisors (40723839583).

256199341601 is an equidigital number, since it uses as much as digits as its factorization.

256199341601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515491711.

The product of its (nonzero) digits is 349920, while the sum is 47.

The spelling of 256199341601 in words is "two hundred fifty-six billion, one hundred ninety-nine million, three hundred forty-one thousand, six hundred one".