257928012455 has 16 divisors (see below), whose sum is σ = 321376831200. Its totient is φ = 198486503040.

The previous prime is 257928012437. The next prime is 257928012457. The reversal of 257928012455 is 554210829752.

257928012455 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-257928012455 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257928012457) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3267341 + ... + 3345350.

It is an arithmetic number, because the mean of its divisors is an integer number (20086051950).

Almost surely, 2^257928012455 is an apocalyptic number.

257928012455 is a deficient number, since it is larger than the sum of its proper divisors (63448818745).

257928012455 is a wasteful number, since it uses less digits than its factorization.

257928012455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6612994.

The product of its (nonzero) digits is 2016000, while the sum is 50.

The spelling of 257928012455 in words is "two hundred fifty-seven billion, nine hundred twenty-eight million, twelve thousand, four hundred fifty-five".