80166006881 has 8 divisors (see below), whose sum is σ = 80814754944. Its totient is φ = 79517816560.

The previous prime is 80166006841. The next prime is 80166006883. The reversal of 80166006881 is 18860066108.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 80166006881 - 2¹⁴ = 80165990497 is a prime.

It is a super-2 number, since 2×80166006881² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80166006883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151640 + ... + 428166.

It is an arithmetic number, because the mean of its divisors is an integer number (10101844368).

Almost surely, 2^80166006881 is an apocalyptic number.

It is an amenable number.

80166006881 is a deficient number, since it is larger than the sum of its proper divisors (648748063).

80166006881 is a wasteful number, since it uses less digits than its factorization.

80166006881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278871.

The product of its (nonzero) digits is 110592, while the sum is 44.

The spelling of 80166006881 in words is "eighty billion, one hundred sixty-six million, six thousand, eight hundred eighty-one".