263120206213 has 4 divisors (see below), whose sum is σ = 278597865420. Its totient is φ = 247642547008.

The previous prime is 263120206133. The next prime is 263120206231. The reversal of 263120206213 is 312602021362.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 193457466244 + 69662739969 = 439838^2 + 263937^2 .

It is a cyclic number.

It is not a de Polignac number, because 263120206213 - 2²⁵ = 263086651781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263120206243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7738829578 + ... + 7738829611.

It is an arithmetic number, because the mean of its divisors is an integer number (69649466355).

Almost surely, 2^263120206213 is an apocalyptic number.

It is an amenable number.

263120206213 is a deficient number, since it is larger than the sum of its proper divisors (15477659207).

263120206213 is a wasteful number, since it uses less digits than its factorization.

263120206213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15477659206.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 263120206213 its reverse (312602021362), we get a palindrome (575722227575).

The spelling of 263120206213 in words is "two hundred sixty-three billion, one hundred twenty million, two hundred six thousand, two hundred thirteen".