257012650771 has 32 divisors (see below), whose sum is σ = 282795701760. Its totient is φ = 232805362944.

The previous prime is 257012650711. The next prime is 257012650841. The reversal of 257012650771 is 177056210752.

It is not a de Polignac number, because 257012650771 - 2¹¹ = 257012648723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257012650711) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10400196 + ... + 10424878.

It is an arithmetic number, because the mean of its divisors is an integer number (8837365680).

Almost surely, 2^257012650771 is an apocalyptic number.

257012650771 is a deficient number, since it is larger than the sum of its proper divisors (25783050989).

257012650771 is a wasteful number, since it uses less digits than its factorization.

257012650771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25035.

The product of its (nonzero) digits is 205800, while the sum is 43.

The spelling of 257012650771 in words is "two hundred fifty-seven billion, twelve million, six hundred fifty thousand, seven hundred seventy-one".