266664655745 has 8 divisors (see below), whose sum is σ = 320078275584. Its totient is φ = 213277932144.

The previous prime is 266664655711. The next prime is 266664655813. The reversal of 266664655745 is 547556466662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 266664655745 - 2⁸ = 266664655489 is a prime.

It is a super-2 number, since 2×266664655745² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6702239 + ... + 6741908.

It is an arithmetic number, because the mean of its divisors is an integer number (40009784448).

Almost surely, 2^266664655745 is an apocalyptic number.

It is an amenable number.

266664655745 is a deficient number, since it is larger than the sum of its proper divisors (53413619839).

266664655745 is a wasteful number, since it uses less digits than its factorization.

266664655745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13448119.

The product of its digits is 217728000, while the sum is 62.

The spelling of 266664655745 in words is "two hundred sixty-six billion, six hundred sixty-four million, six hundred fifty-five thousand, seven hundred forty-five".