257238229263 has 8 divisors (see below), whose sum is σ = 345168919728. Its totient is φ = 170399845824.

The previous prime is 257238229247. The next prime is 257238229289. The reversal of 257238229263 is 362922832752.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 257238229263 - 2⁴ = 257238229247 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257238224263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273076206 + ... + 273077147.

It is an arithmetic number, because the mean of its divisors is an integer number (43146114966).

Almost surely, 2^257238229263 is an apocalyptic number.

257238229263 is a deficient number, since it is larger than the sum of its proper divisors (87930690465).

257238229263 is a wasteful number, since it uses less digits than its factorization.

257238229263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546153513.

The product of its digits is 4354560, while the sum is 51.

The spelling of 257238229263 in words is "two hundred fifty-seven billion, two hundred thirty-eight million, two hundred twenty-nine thousand, two hundred sixty-three".