266631150353125 has 12 divisors (see below), whose sum is σ = 333267607453284. Its totient is φ = 213304920280000.

The previous prime is 266631150353123. The next prime is 266631150353177. The reversal of 266631150353125 is 521353051136662.

It can be written as a sum of positive squares in 6 ways, for example, as 225788429482564 + 40842720870561 = 15026258^2 + 6390831^2 .

It is not a de Polignac number, because 266631150353125 - 2¹ = 266631150353123 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 (266631150353123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42660980932 + ... + 42660987181.

It is an arithmetic number, because the mean of its divisors is an integer number (27772300621107).

Almost surely, 2^{266631150353125} is an apocalyptic number.

266631150353125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

266631150353125 is a deficient number, since it is larger than the sum of its proper divisors (66636457100159).

266631150353125 is an frugal number, since it uses more digits than its factorization.

266631150353125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85321968138 (or 85321968118 counting only the distinct ones).

The product of its (nonzero) digits is 2916000, while the sum is 49.

The spelling of 266631150353125 in words is "two hundred sixty-six trillion, six hundred thirty-one billion, one hundred fifty million, three hundred fifty-three thousand, one hundred twenty-five".