266525027540 has 12 divisors (see below), whose sum is σ = 559702557876. Its totient is φ = 106610011008.

The previous prime is 266525027537. The next prime is 266525027563. The reversal of 266525027540 is 45720525662.

It can be written as a sum of positive squares in 2 ways, for example, as 54560550724 + 211964476816 = 233582^2 + 460396^2 .

It is a junction number, because it is equal to n+sod(n) for n = 266525027491 and 266525027500.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6663125669 + ... + 6663125708.

It is an arithmetic number, because the mean of its divisors is an integer number (46641879823).

Almost surely, 2^266525027540 is an apocalyptic number.

266525027540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266525027540 is an abundant number, since it is smaller than the sum of its proper divisors (293177530336).

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

266525027540 is a wasteful number, since it uses less digits than its factorization.

266525027540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13326251386 (or 13326251384 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 44.

The spelling of 266525027540 in words is "two hundred sixty-six billion, five hundred twenty-five million, twenty-seven thousand, five hundred forty".