80660666208 has 48 divisors (see below), whose sum is σ = 213676792560. Its totient is φ = 26640216576.

The previous prime is 80660666171. The next prime is 80660666231. The reversal of 80660666208 is 80266606608.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×80660666208² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 3843735 + ... + 3864662.

It is an arithmetic number, because the mean of its divisors is an integer number (4451599845).

Almost surely, 2^80660666208 is an apocalyptic number.

It is an amenable number.

80660666208 is an abundant number, since it is smaller than the sum of its proper divisors (133016126352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80660666208 is a wasteful number, since it uses less digits than its factorization.

80660666208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7708519 (or 7708511 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 48.

The spelling of 80660666208 in words is "eighty billion, six hundred sixty million, six hundred sixty-six thousand, two hundred eight".