866788547420366 has 8 divisors (see below), whose sum is σ = 1306782733928760. Its totient is φ = 431194302777448.

The previous prime is 866788547420359. The next prime is 866788547420381. The reversal of 866788547420366 is 663024745887668.

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

It is a super-2 number, since 2×866788547420366² (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 3 ways as a sum of consecutive naturals, for example, 1099985465876 + ... + 1099985466663.

It is an arithmetic number, because the mean of its divisors is an integer number (163347841741095).

Almost surely, 2^{866788547420366} is an apocalyptic number.

866788547420366 is a deficient number, since it is larger than the sum of its proper divisors (439994186508394).

866788547420366 is a wasteful number, since it uses less digits than its factorization.

866788547420366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2199970932738.

The product of its (nonzero) digits is 15606743040, while the sum is 80.

The spelling of 866788547420366 in words is "eight hundred sixty-six trillion, seven hundred eighty-eight billion, five hundred forty-seven million, four hundred twenty thousand, three hundred sixty-six".