266236262020 has 12 divisors (see below), whose sum is σ = 559096150284. Its totient is φ = 106494504800.

The previous prime is 266236261987. The next prime is 266236262041. The reversal of 266236262020 is 20262632662.

It can be written as a sum of positive squares in 2 ways, for example, as 70228180036 + 196008081984 = 265006^2 + 442728^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6655906531 + ... + 6655906570.

It is an arithmetic number, because the mean of its divisors is an integer number (46591345857).

Almost surely, 2^266236262020 is an apocalyptic number.

266236262020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266236262020 is an abundant number, since it is smaller than the sum of its proper divisors (292859888264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

266236262020 is a wasteful number, since it uses less digits than its factorization.

266236262020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13311813110 (or 13311813108 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 37.

Adding to 266236262020 its reverse (20262632662), we get a palindrome (286498894682).

The spelling of 266236262020 in words is "two hundred sixty-six billion, two hundred thirty-six million, two hundred sixty-two thousand, twenty".