866350730545 has 4 divisors (see below), whose sum is σ = 1039620876660. Its totient is φ = 693080584432.

The previous prime is 866350730521. The next prime is 866350730551. The reversal of 866350730545 is 545037053668.

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 214145892081 + 652204838464 = 462759^2 + 807592^2 .

It is a cyclic number.

It is not a de Polignac number, because 866350730545 - 2⁷ = 866350730417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 866350730492 and 866350730501.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86635073050 + ... + 86635073059.

It is an arithmetic number, because the mean of its divisors is an integer number (259905219165).

Almost surely, 2^866350730545 is an apocalyptic number.

It is an amenable number.

866350730545 is a deficient number, since it is larger than the sum of its proper divisors (173270146115).

866350730545 is a wasteful number, since it uses less digits than its factorization.

866350730545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173270146114.

The product of its (nonzero) digits is 9072000, while the sum is 52.

The spelling of 866350730545 in words is "eight hundred sixty-six billion, three hundred fifty million, seven hundred thirty thousand, five hundred forty-five".