256103132241601 has 4 divisors (see below), whose sum is σ = 256103502412500. Its totient is φ = 256102762070704.

The previous prime is 256103132241571. The next prime is 256103132241629. The reversal of 256103132241601 is 106142231301652.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 116283764415025 + 139819367826576 = 10783495^2 + 11824524^2 .

It is a cyclic number.

It is not a de Polignac number, because 256103132241601 - 2¹⁹ = 256103131717313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256103132241101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184045726 + ... + 185432023.

It is an arithmetic number, because the mean of its divisors is an integer number (64025875603125).

Almost surely, 2^{256103132241601} is an apocalyptic number.

It is an amenable number.

256103132241601 is a deficient number, since it is larger than the sum of its proper divisors (370170899).

256103132241601 is an equidigital number, since it uses as much as digits as its factorization.

256103132241601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370170898.

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 256103132241601 in words is "two hundred fifty-six trillion, one hundred three billion, one hundred thirty-two million, two hundred forty-one thousand, six hundred one".