257493872383 has 16 divisors (see below), whose sum is σ = 283085252352. Its totient is φ = 232269840000.

The previous prime is 257493872371. The next prime is 257493872407. The reversal of 257493872383 is 383278394752.

It is a happy number.

It is not a de Polignac number, because 257493872383 - 2⁹ = 257493871871 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 (257493872483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1375360 + ... + 1551322.

It is an arithmetic number, because the mean of its divisors is an integer number (17692828272).

Almost surely, 2^257493872383 is an apocalyptic number.

257493872383 is a deficient number, since it is larger than the sum of its proper divisors (25591379969).

257493872383 is a wasteful number, since it uses less digits than its factorization.

257493872383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177006.

The product of its digits is 60963840, while the sum is 61.

The spelling of 257493872383 in words is "two hundred fifty-seven billion, four hundred ninety-three million, eight hundred seventy-two thousand, three hundred eighty-three".