80107861 has 2 divisors, whose sum is σ = 80107862. Its totient is φ = 80107860.

The previous prime is 80107829. The next prime is 80107877. The reversal of 80107861 is 16870108.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76475025 + 3632836 = 8745^2 + 1906^2 .

It is a cyclic number.

It is not a de Polignac number, because 80107861 - 2⁵ = 80107829 is a prime.

It is equal to p_4675306 and since 80107861 and 4675306 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80107801) 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 as a sum of consecutive naturals, namely, 40053930 + 40053931.

It is an arithmetic number, because the mean of its divisors is an integer number (40053931).

Almost surely, 2^80107861 is an apocalyptic number.

It is an amenable number.

80107861 is a deficient number, since it is larger than the sum of its proper divisors (1).

80107861 is an equidigital number, since it uses as much as digits as its factorization.

80107861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 31.

The square root of 80107861 is about 8950.2994921958. The cubic root of 80107861 is about 431.0805006081.

Adding to 80107861 its reverse (16870108), we get a palindrome (96977969).

The spelling of 80107861 in words is "eighty million, one hundred seven thousand, eight hundred sixty-one".