866786514051385 has 8 divisors (see below), whose sum is σ = 1041528828606336. Its totient is φ = 692505870078000.

The previous prime is 866786514051319. The next prime is 866786514051421. The reversal of 866786514051385 is 583150415687668.

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

It is not a de Polignac number, because 866786514051385 - 2³⁹ = 866236758237497 is a prime.

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, 115417641259 + ... + 115417648768.

It is an arithmetic number, because the mean of its divisors is an integer number (130191103575792).

Almost surely, 2^{866786514051385} is an apocalyptic number.

It is an amenable number.

866786514051385 is a deficient number, since it is larger than the sum of its proper divisors (174742314554951).

866786514051385 is a wasteful number, since it uses less digits than its factorization.

866786514051385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230835290783.

The product of its (nonzero) digits is 1161216000, while the sum is 73.

The spelling of 866786514051385 in words is "eight hundred sixty-six trillion, seven hundred eighty-six billion, five hundred fourteen million, fifty-one thousand, three hundred eighty-five".