80371507109 has 2 divisors, whose sum is σ = 80371507110. Its totient is φ = 80371507108.

The previous prime is 80371507079. The next prime is 80371507127. The reversal of 80371507109 is 90170517308.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80359776484 + 11730625 = 283478^2 + 3425^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80371507109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80371507129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40185753554 + 40185753555.

It is an arithmetic number, because the mean of its divisors is an integer number (40185753555).

Almost surely, 2^80371507109 is an apocalyptic number.

It is an amenable number.

80371507109 is a deficient number, since it is larger than the sum of its proper divisors (1).

80371507109 is an equidigital number, since it uses as much as digits as its factorization.

80371507109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 41.

The spelling of 80371507109 in words is "eighty billion, three hundred seventy-one million, five hundred seven thousand, one hundred nine".