800245254161 has 2 divisors, whose sum is σ = 800245254162. Its totient is φ = 800245254160.

The previous prime is 800245254079. The next prime is 800245254167. The reversal of 800245254161 is 161452542008.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 472539382225 + 327705871936 = 687415^2 + 572456^2 .

It is a cyclic number.

It is not a de Polignac number, because 800245254161 - 2²⁶ = 800178145297 is a prime.

It is not a weakly prime, because it can be changed into another prime (800245254167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400122627080 + 400122627081.

It is an arithmetic number, because the mean of its divisors is an integer number (400122627081).

Almost surely, 2^800245254161 is an apocalyptic number.

It is an amenable number.

800245254161 is a deficient number, since it is larger than the sum of its proper divisors (1).

800245254161 is an equidigital number, since it uses as much as digits as its factorization.

800245254161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 76800, while the sum is 38.

Adding to 800245254161 its reverse (161452542008), we get a palindrome (961697796169).

The spelling of 800245254161 in words is "eight hundred billion, two hundred forty-five million, two hundred fifty-four thousand, one hundred sixty-one".