256364236121203 has 8 divisors (see below), whose sum is σ = 298967039208800. Its totient is φ = 219740773817880.

The previous prime is 256364236121179. The next prime is 256364236121239. The reversal of 256364236121203 is 302121632463652.

256364236121203 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 256364236121203 - 2²¹ = 256364234024051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256364236121293) 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, 373708798668 + ... + 373708799353.

It is an arithmetic number, because the mean of its divisors is an integer number (37370879901100).

Almost surely, 2^{256364236121203} is an apocalyptic number.

256364236121203 is a deficient number, since it is larger than the sum of its proper divisors (42602803087597).

256364236121203 is an frugal number, since it uses more digits than its factorization.

256364236121203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747417598042 (or 747417598028 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 46.

Adding to 256364236121203 its reverse (302121632463652), we get a palindrome (558485868584855).

The spelling of 256364236121203 in words is "two hundred fifty-six trillion, three hundred sixty-four billion, two hundred thirty-six million, one hundred twenty-one thousand, two hundred three".