257503486743 has 24 divisors (see below), whose sum is σ = 378306761040. Its totient is φ = 168735678720.

The previous prime is 257503486711. The next prime is 257503486763. The reversal of 257503486743 is 347684305752.

It is a happy number.

257503486743 is a `hidden beast` number, since 2 + 57 + 503 + 4 + 86 + 7 + 4 + 3 = 666.

It is not a de Polignac number, because 257503486743 - 2⁵ = 257503486711 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 257503486743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257503486703) 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 23 ways as a sum of consecutive naturals, for example, 4267423 + ... + 4327343.

It is an arithmetic number, because the mean of its divisors is an integer number (15762781710).

Almost surely, 2^257503486743 is an apocalyptic number.

257503486743 is a deficient number, since it is larger than the sum of its proper divisors (120803274297).

257503486743 is a wasteful number, since it uses less digits than its factorization.

257503486743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68079 (or 68076 counting only the distinct ones).

The product of its (nonzero) digits is 16934400, while the sum is 54.

The spelling of 257503486743 in words is "two hundred fifty-seven billion, five hundred three million, four hundred eighty-six thousand, seven hundred forty-three".