256205903448 has 32 divisors (see below), whose sum is σ = 698743373760. Its totient is φ = 77638152480.

The previous prime is 256205903419. The next prime is 256205903479. The reversal of 256205903448 is 844309502652.

It is a happy number.

256205903448 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 256205903397 and 256205903406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485238190 + ... + 485238717.

It is an arithmetic number, because the mean of its divisors is an integer number (21835730430).

Almost surely, 2^256205903448 is an apocalyptic number.

It is an amenable number.

256205903448 is an abundant number, since it is smaller than the sum of its proper divisors (442537470312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256205903448 is a wasteful number, since it uses less digits than its factorization.

256205903448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970476927 (or 970476923 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 48.

The spelling of 256205903448 in words is "two hundred fifty-six billion, two hundred five million, nine hundred three thousand, four hundred forty-eight".