266697434005 has 4 divisors (see below), whose sum is σ = 320036920812. Its totient is φ = 213357947200.

The previous prime is 266697433993. The next prime is 266697434027. The reversal of 266697434005 is 500434796662.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 96642643876 + 170054790129 = 310874^2 + 412377^2 .

It is not a de Polignac number, because 266697434005 - 2²⁹ = 266160563093 is a prime.

It is a super-2 number, since 2×266697434005² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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, 26669743396 + ... + 26669743405.

It is an arithmetic number, because the mean of its divisors is an integer number (80009230203).

Almost surely, 2^266697434005 is an apocalyptic number.

It is an amenable number.

266697434005 is a deficient number, since it is larger than the sum of its proper divisors (53339486807).

266697434005 is an equidigital number, since it uses as much as digits as its factorization.

266697434005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53339486806.

The product of its (nonzero) digits is 6531840, while the sum is 52.

The spelling of 266697434005 in words is "two hundred sixty-six billion, six hundred ninety-seven million, four hundred thirty-four thousand, five".