84873413666 has 4 divisors (see below), whose sum is σ = 127310120502. Its totient is φ = 42436706832.

The previous prime is 84873413633. The next prime is 84873413747. The reversal of 84873413666 is 66631437848.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 54030678025 + 30842735641 = 232445^2 + 175621^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21218353415 + ... + 21218353418.

Almost surely, 2^84873413666 is an apocalyptic number.

84873413666 is a deficient number, since it is larger than the sum of its proper divisors (42436706836).

84873413666 is a wasteful number, since it uses less digits than its factorization.

84873413666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42436706835.

The product of its digits is 13934592, while the sum is 56.

The spelling of 84873413666 in words is "eighty-four billion, eight hundred seventy-three million, four hundred thirteen thousand, six hundred sixty-six".