80378117 has 2 divisors, whose sum is σ = 80378118. Its totient is φ = 80378116.

The previous prime is 80378107. The next prime is 80378141. The reversal of 80378117 is 71187308.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79405921 + 972196 = 8911^2 + 986^2 .

It is a cyclic number.

It is not a de Polignac number, because 80378117 - 2⁴ = 80378101 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80378107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40189058 + 40189059.

It is an arithmetic number, because the mean of its divisors is an integer number (40189059).

Almost surely, 2^80378117 is an apocalyptic number.

It is an amenable number.

80378117 is a deficient number, since it is larger than the sum of its proper divisors (1).

80378117 is an equidigital number, since it uses as much as digits as its factorization.

80378117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408, while the sum is 35.

The square root of 80378117 is about 8965.3843754744. The cubic root of 80378117 is about 431.5647282600.

The spelling of 80378117 in words is "eighty million, three hundred seventy-eight thousand, one hundred seventeen".