257343948471 has 16 divisors (see below), whose sum is σ = 348075295200. Its totient is φ = 169099780608.

The previous prime is 257343948431. The next prime is 257343948493. The reversal of 257343948471 is 174849343752.

It is not a de Polignac number, because 257343948471 - 2⁷ = 257343948343 is a prime.

It is a super-3 number, since 3×257343948471³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257343948431) by changing a digit.

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, 1435606 + ... + 1604883.

It is an arithmetic number, because the mean of its divisors is an integer number (21754705950).

Almost surely, 2^257343948471 is an apocalyptic number.

257343948471 is a deficient number, since it is larger than the sum of its proper divisors (90731346729).

257343948471 is a wasteful number, since it uses less digits than its factorization.

257343948471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3040898.

The product of its digits is 20321280, while the sum is 57.

The spelling of 257343948471 in words is "two hundred fifty-seven billion, three hundred forty-three million, nine hundred forty-eight thousand, four hundred seventy-one".