811614966866 has 16 divisors (see below), whose sum is σ = 1328161790880. Its totient is φ = 368897957280.

The previous prime is 811614966863. The next prime is 811614966871. The reversal of 811614966866 is 668669416118.

It is a junction number, because it is equal to n+sod(n) for n = 811614966799 and 811614966808.

It is not an unprimeable number, because it can be changed into a prime (811614966863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428636 + ... + 1344231.

It is an arithmetic number, because the mean of its divisors is an integer number (83010111930).

Almost surely, 2^811614966866 is an apocalyptic number.

811614966866 is a deficient number, since it is larger than the sum of its proper divisors (516546824014).

811614966866 is a wasteful number, since it uses less digits than its factorization.

811614966866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1793689.

The product of its digits is 17915904, while the sum is 62.

The spelling of 811614966866 in words is "eight hundred eleven billion, six hundred fourteen million, nine hundred sixty-six thousand, eight hundred sixty-six".