266041540040564 has 48 divisors (see below), whose sum is σ = 468065711771280. Its totient is φ = 132310113976320.

The previous prime is 266041540040467. The next prime is 266041540040659. The reversal of 266041540040564 is 465040045140662.

It can be written as a sum of positive squares in 8 ways, for example, as 27760885699600 + 238280654340964 = 5268860^2 + 15436342^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2234513324 + ... + 2234632380.

It is an arithmetic number, because the mean of its divisors is an integer number (9751368995235).

Almost surely, 2^{266041540040564} is an apocalyptic number.

It is an amenable number.

266041540040564 is a deficient number, since it is larger than the sum of its proper divisors (202024171730716).

266041540040564 is a wasteful number, since it uses less digits than its factorization.

266041540040564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122468 (or 122466 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 47.

The spelling of 266041540040564 in words is "two hundred sixty-six trillion, forty-one billion, five hundred forty million, forty thousand, five hundred sixty-four".