80666770994 has 16 divisors (see below), whose sum is σ = 127516912800. Its totient is φ = 38166077664.

The previous prime is 80666770967. The next prime is 80666771011. The reversal of 80666770994 is 49907766608.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1202987 + ... + 1268270.

It is an arithmetic number, because the mean of its divisors is an integer number (7969807050).

Almost surely, 2^80666770994 is an apocalyptic number.

80666770994 is a deficient number, since it is larger than the sum of its proper divisors (46850141806).

80666770994 is a wasteful number, since it uses less digits than its factorization.

80666770994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2472137.

The product of its (nonzero) digits is 27433728, while the sum is 62.

The spelling of 80666770994 in words is "eighty billion, six hundred sixty-six million, seven hundred seventy thousand, nine hundred ninety-four".