263220055013 has 2 divisors, whose sum is σ = 263220055014. Its totient is φ = 263220055012.

The previous prime is 263220055001. The next prime is 263220055039. The reversal of 263220055013 is 310550022362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 234796455364 + 28423599649 = 484558^2 + 168593^2 .

It is a cyclic number.

It is not a de Polignac number, because 263220055013 - 2⁶ = 263220054949 is a prime.

It is a super-2 number, since 2×263220055013² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263220055613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131610027506 + 131610027507.

It is an arithmetic number, because the mean of its divisors is an integer number (131610027507).

Almost surely, 2^263220055013 is an apocalyptic number.

It is an amenable number.

263220055013 is a deficient number, since it is larger than the sum of its proper divisors (1).

263220055013 is an equidigital number, since it uses as much as digits as its factorization.

263220055013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 263220055013 its reverse (310550022362), we get a palindrome (573770077375).

The spelling of 263220055013 in words is "two hundred sixty-three billion, two hundred twenty million, fifty-five thousand, thirteen".