266686852555 has 16 divisors (see below), whose sum is σ = 344592390240. Its totient is φ = 197396127232.

The previous prime is 266686852543. The next prime is 266686852567. The reversal of 266686852555 is 555258686662.

It is an interprime number because it is at equal distance from previous prime (266686852543) and next prime (266686852567).

It is not a de Polignac number, because 266686852555 - 2²⁷ = 266552634827 is a prime.

It is a super-2 number, since 2×266686852555² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26583904 + ... + 26593933.

It is an arithmetic number, because the mean of its divisors is an integer number (21537024390).

Almost surely, 2^266686852555 is an apocalyptic number.

266686852555 is a deficient number, since it is larger than the sum of its proper divisors (77905537685).

266686852555 is a wasteful number, since it uses less digits than its factorization.

266686852555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53177918.

The product of its digits is 207360000, while the sum is 64.

The spelling of 266686852555 in words is "two hundred sixty-six billion, six hundred eighty-six million, eight hundred fifty-two thousand, five hundred fifty-five".