256230055389 has 16 divisors (see below), whose sum is σ = 425940871680. Its totient is φ = 133106522160.

The previous prime is 256230055381. The next prime is 256230055447. The reversal of 256230055389 is 983550032652.

It is not a de Polignac number, because 256230055389 - 2³ = 256230055381 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256230055381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 554610279 + ... + 554610740.

It is an arithmetic number, because the mean of its divisors is an integer number (26621304480).

Almost surely, 2^256230055389 is an apocalyptic number.

It is an amenable number.

256230055389 is a deficient number, since it is larger than the sum of its proper divisors (169710816291).

256230055389 is a wasteful number, since it uses less digits than its factorization.

256230055389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109221040.

The product of its (nonzero) digits is 1944000, while the sum is 48.

The spelling of 256230055389 in words is "two hundred fifty-six billion, two hundred thirty million, fifty-five thousand, three hundred eighty-nine".