257897997011 has 2 divisors, whose sum is σ = 257897997012. Its totient is φ = 257897997010.

The previous prime is 257897997001. The next prime is 257897997059. The reversal of 257897997011 is 110799798752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 257897997011 - 2¹⁰ = 257897995987 is a prime.

It is a super-2 number, since 2×257897997011² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (257897997001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128948998505 + 128948998506.

It is an arithmetic number, because the mean of its divisors is an integer number (128948998506).

Almost surely, 2^257897997011 is an apocalyptic number.

257897997011 is a deficient number, since it is larger than the sum of its proper divisors (1).

257897997011 is an equidigital number, since it uses as much as digits as its factorization.

257897997011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20003760, while the sum is 65.

The spelling of 257897997011 in words is "two hundred fifty-seven billion, eight hundred ninety-seven million, nine hundred ninety-seven thousand, eleven".