80166813 has 4 divisors (see below), whose sum is σ = 106889088. Its totient is φ = 53444540.

The previous prime is 80166811. The next prime is 80166829. The reversal of 80166813 is 31866108.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80166813 - 2¹ = 80166811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80166811) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 13361133 + ... + 13361138.

It is an arithmetic number, because the mean of its divisors is an integer number (26722272).

Almost surely, 2^80166813 is an apocalyptic number.

It is an amenable number.

80166813 is a deficient number, since it is larger than the sum of its proper divisors (26722275).

80166813 is a wasteful number, since it uses less digits than its factorization.

80166813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26722274.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 80166813 is about 8953.5921841460. The cubic root of 80166813 is about 431.1862198472.

The spelling of 80166813 in words is "eighty million, one hundred sixty-six thousand, eight hundred thirteen".