263254610009 has 2 divisors, whose sum is σ = 263254610010. Its totient is φ = 263254610008.

The previous prime is 263254609997. The next prime is 263254610023. The reversal of 263254610009 is 900016452362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139149888784 + 124104721225 = 373028^2 + 352285^2 .

It is a cyclic number.

It is not a de Polignac number, because 263254610009 - 2¹⁶ = 263254544473 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (263254619009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131627305004 + 131627305005.

It is an arithmetic number, because the mean of its divisors is an integer number (131627305005).

Almost surely, 2^263254610009 is an apocalyptic number.

It is an amenable number.

263254610009 is a deficient number, since it is larger than the sum of its proper divisors (1).

263254610009 is an equidigital number, since it uses as much as digits as its factorization.

263254610009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 263254610009 in words is "two hundred sixty-three billion, two hundred fifty-four million, six hundred ten thousand, nine".