257366040545 has 16 divisors (see below), whose sum is σ = 309125393280. Its totient is φ = 205702176000.

The previous prime is 257366040419. The next prime is 257366040553. The reversal of 257366040545 is 545040663752.

It is not a de Polignac number, because 257366040545 - 2¹⁰ = 257366039521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 257366040545.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 30748121 + ... + 30756489.

It is an arithmetic number, because the mean of its divisors is an integer number (19320337080).

Almost surely, 2^257366040545 is an apocalyptic number.

It is an amenable number.

257366040545 is a deficient number, since it is larger than the sum of its proper divisors (51759352735).

257366040545 is a wasteful number, since it uses less digits than its factorization.

257366040545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13336.

The product of its (nonzero) digits is 3024000, while the sum is 47.

The spelling of 257366040545 in words is "two hundred fifty-seven billion, three hundred sixty-six million, forty thousand, five hundred forty-five".