256474489958 has 8 divisors (see below), whose sum is σ = 385402421952. Its totient is φ = 128007015976.

The previous prime is 256474489919. The next prime is 256474490003. The reversal of 256474489958 is 859984474652.

256474489958 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 256474489891 and 256474489900.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115113110 + ... + 115115337.

It is an arithmetic number, because the mean of its divisors is an integer number (48175302744).

Almost surely, 2^256474489958 is an apocalyptic number.

256474489958 is a deficient number, since it is larger than the sum of its proper divisors (128927931994).

256474489958 is a wasteful number, since it uses less digits than its factorization.

256474489958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230229006.

The product of its digits is 696729600, while the sum is 71.

The spelling of 256474489958 in words is "two hundred fifty-six billion, four hundred seventy-four million, four hundred eighty-nine thousand, nine hundred fifty-eight".