200634260857 has 2 divisors, whose sum is σ = 200634260858. Its totient is φ = 200634260856.

The previous prime is 200634260821. The next prime is 200634260921. The reversal of 200634260857 is 758062436002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200628743056 + 5517801 = 447916^2 + 2349^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200634260857 is a prime.

It is not a weakly prime, because it can be changed into another prime (200634261857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100317130428 + 100317130429.

It is an arithmetic number, because the mean of its divisors is an integer number (100317130429).

Almost surely, 2^200634260857 is an apocalyptic number.

It is an amenable number.

200634260857 is a deficient number, since it is larger than the sum of its proper divisors (1).

200634260857 is an equidigital number, since it uses as much as digits as its factorization.

200634260857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 43.

Adding to 200634260857 its reverse (758062436002), we get a palindrome (958696696859).

The spelling of 200634260857 in words is "two hundred billion, six hundred thirty-four million, two hundred sixty thousand, eight hundred fifty-seven".