257538276713 has 2 divisors, whose sum is σ = 257538276714. Its totient is φ = 257538276712.

The previous prime is 257538276689. The next prime is 257538276761. The reversal of 257538276713 is 317672835752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 222489569344 + 35048707369 = 471688^2 + 187213^2 .

It is a cyclic number.

It is not a de Polignac number, because 257538276713 - 2²² = 257534082409 is a prime.

It is not a weakly prime, because it can be changed into another prime (257538276313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128769138356 + 128769138357.

It is an arithmetic number, because the mean of its divisors is an integer number (128769138357).

Almost surely, 2^257538276713 is an apocalyptic number.

It is an amenable number.

257538276713 is a deficient number, since it is larger than the sum of its proper divisors (1).

257538276713 is an equidigital number, since it uses as much as digits as its factorization.

257538276713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14817600, while the sum is 56.

The spelling of 257538276713 in words is "two hundred fifty-seven billion, five hundred thirty-eight million, two hundred seventy-six thousand, seven hundred thirteen".