866468824042655 has 8 divisors (see below), whose sum is σ = 1039762752288000. Its totient is φ = 693174950276256.

The previous prime is 866468824042609. The next prime is 866468824042663. The reversal of 866468824042655 is 556240428864668.

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 866468824042655 - 2²⁸ = 866468555607199 is a prime.

It is a super-2 number, since 2×866468824042655² (a number of 31 digits) contains 22 as substring.

It is a congruent 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, 42075461 + ... + 59188529.

It is an arithmetic number, because the mean of its divisors is an integer number (129970344036000).

Almost surely, 2^{866468824042655} is an apocalyptic number.

866468824042655 is a deficient number, since it is larger than the sum of its proper divisors (173293928245345).

866468824042655 is a wasteful number, since it uses less digits than its factorization.

866468824042655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27239473.

The product of its (nonzero) digits is 4246732800, while the sum is 74.

The spelling of 866468824042655 in words is "eight hundred sixty-six trillion, four hundred sixty-eight billion, eight hundred twenty-four million, forty-two thousand, six hundred fifty-five".