80378971 has 2 divisors, whose sum is σ = 80378972. Its totient is φ = 80378970.

The previous prime is 80378959. The next prime is 80378989. The reversal of 80378971 is 17987308.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80378971 - 2⁷ = 80378843 is a prime.

It is not a weakly prime, because it can be changed into another prime (80370971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40189485 + 40189486.

It is an arithmetic number, because the mean of its divisors is an integer number (40189486).

Almost surely, 2^80378971 is an apocalyptic number.

80378971 is a deficient number, since it is larger than the sum of its proper divisors (1).

80378971 is an equidigital number, since it uses as much as digits as its factorization.

80378971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 43.

The square root of 80378971 is about 8965.4320029768. The cubic root of 80378971 is about 431.5662566817.

The spelling of 80378971 in words is "eighty million, three hundred seventy-eight thousand, nine hundred seventy-one".