259787726213 has 4 divisors (see below), whose sum is σ = 271082844768. Its totient is φ = 248492607660.

The previous prime is 259787726203. The next prime is 259787726227. The reversal of 259787726213 is 312627787952.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 259787726213 - 2¹⁰ = 259787725189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259787726203) 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, 5647559243 + ... + 5647559288.

It is an arithmetic number, because the mean of its divisors is an integer number (67770711192).

Almost surely, 2^259787726213 is an apocalyptic number.

259787726213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

259787726213 is a deficient number, since it is larger than the sum of its proper divisors (11295118555).

259787726213 is a wasteful number, since it uses less digits than its factorization.

259787726213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11295118554.

The product of its digits is 17781120, while the sum is 59.

The spelling of 259787726213 in words is "two hundred fifty-nine billion, seven hundred eighty-seven million, seven hundred twenty-six thousand, two hundred thirteen".