257601811047 has 16 divisors (see below), whose sum is σ = 392578866432. Its totient is φ = 147184994880.

The previous prime is 257601811039. The next prime is 257601811079. The reversal of 257601811047 is 740118106752.

It is not a de Polignac number, because 257601811047 - 2³ = 257601811039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257601811147) 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, 469653 + ... + 857774.

It is an arithmetic number, because the mean of its divisors is an integer number (24536179152).

Almost surely, 2^257601811047 is an apocalyptic number.

257601811047 is a deficient number, since it is larger than the sum of its proper divisors (134977055385).

257601811047 is a wasteful number, since it uses less digits than its factorization.

257601811047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336678.

The product of its (nonzero) digits is 94080, while the sum is 42.

Adding to 257601811047 its reverse (740118106752), we get a palindrome (997719917799).

The spelling of 257601811047 in words is "two hundred fifty-seven billion, six hundred one million, eight hundred eleven thousand, forty-seven".