266486682664 has 8 divisors (see below), whose sum is σ = 499662530010. Its totient is φ = 133243341328.

The previous prime is 266486682607. The next prime is 266486682743. The reversal of 266486682664 is 466286684662.

It can be written as a sum of positive squares in only one way, i.e., 253320956100 + 13165726564 = 503310^2 + 114742^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 266486682596 and 266486682605.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16655417659 + ... + 16655417674.

Almost surely, 2^266486682664 is an apocalyptic number.

It is an amenable number.

266486682664 is a deficient number, since it is larger than the sum of its proper divisors (233175847346).

266486682664 is a wasteful number, since it uses less digits than its factorization.

266486682664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33310835339 (or 33310835335 counting only the distinct ones).

The product of its digits is 191102976, while the sum is 64.

The spelling of 266486682664 in words is "two hundred sixty-six billion, four hundred eighty-six million, six hundred eighty-two thousand, six hundred sixty-four".