257283060959 has 4 divisors (see below), whose sum is σ = 257296680504. Its totient is φ = 257269441416.

The previous prime is 257283060929. The next prime is 257283060961. The reversal of 257283060959 is 959060382752.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-257283060959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257283060929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6781397 + ... + 6819230.

It is an arithmetic number, because the mean of its divisors is an integer number (64324170126).

Almost surely, 2^257283060959 is an apocalyptic number.

257283060959 is a deficient number, since it is larger than the sum of its proper divisors (13619545).

257283060959 is a wasteful number, since it uses less digits than its factorization.

257283060959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13619544.

The product of its (nonzero) digits is 8164800, while the sum is 56.

The spelling of 257283060959 in words is "two hundred fifty-seven billion, two hundred eighty-three million, sixty thousand, nine hundred fifty-nine".