257366468627 has 4 divisors (see below), whose sum is σ = 257764253616. Its totient is φ = 256968683640.

The previous prime is 257366468591. The next prime is 257366468633. The reversal of 257366468627 is 726864663752.

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

It is a cyclic number.

It is not a de Polignac number, because 257366468627 - 2¹⁴ = 257366452243 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 257366468627.

It is not an unprimeable number, because it can be changed into a prime (257366468687) 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, 198891524 + ... + 198892817.

It is an arithmetic number, because the mean of its divisors is an integer number (64441063404).

Almost surely, 2^257366468627 is an apocalyptic number.

257366468627 is a deficient number, since it is larger than the sum of its proper divisors (397784989).

257366468627 is an equidigital number, since it uses as much as digits as its factorization.

257366468627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397784988.

The product of its digits is 121927680, while the sum is 62.

The spelling of 257366468627 in words is "two hundred fifty-seven billion, three hundred sixty-six million, four hundred sixty-eight thousand, six hundred twenty-seven".