256553505355652 has 12 divisors (see below), whose sum is σ = 448970018891856. Its totient is φ = 128276357100840.

The previous prime is 256553505355591. The next prime is 256553505355657.

256553505355652 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×256553505355652² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (256553505355657) 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, 97432598 + ... + 100031085.

It is an arithmetic number, because the mean of its divisors is an integer number (37414168240988).

Almost surely, 2^{256553505355652} is an apocalyptic number.

It is an amenable number.

256553505355652 is a deficient number, since it is larger than the sum of its proper divisors (192416513536204).

256553505355652 is a wasteful number, since it uses less digits than its factorization.

256553505355652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197788498 (or 197788496 counting only the distinct ones).

The product of its (nonzero) digits is 506250000, while the sum is 62.

The spelling of 256553505355652 in words is "two hundred fifty-six trillion, five hundred fifty-three billion, five hundred five million, three hundred fifty-five thousand, six hundred fifty-two".