266004213266125 has 8 divisors (see below), whose sum is σ = 331973258156280. Its totient is φ = 212803370612800.

The previous prime is 266004213266119. The next prime is 266004213266161. The reversal of 266004213266125 is 521662312400662.

It can be written as a sum of positive squares in 4 ways, for example, as 48892622890276 + 217111590375849 = 6992326^2 + 14734707^2 .

It is not a de Polignac number, because 266004213266125 - 2⁷ = 266004213265997 is a prime.

It is a super-2 number, since 2×266004213266125² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1064016852940 + ... + 1064016853189.

It is an arithmetic number, because the mean of its divisors is an integer number (41496657269535).

Almost surely, 2^{266004213266125} is an apocalyptic number.

266004213266125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

266004213266125 is a deficient number, since it is larger than the sum of its proper divisors (65969044890155).

266004213266125 is an equidigital number, since it uses as much as digits as its factorization.

266004213266125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2128033706144 (or 2128033706134 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 46.

Adding to 266004213266125 its reverse (521662312400662), we get a palindrome (787666525666787).

The spelling of 266004213266125 in words is "two hundred sixty-six trillion, four billion, two hundred thirteen million, two hundred sixty-six thousand, one hundred twenty-five".