80549782597 has 2 divisors, whose sum is σ = 80549782598. Its totient is φ = 80549782596.

The previous prime is 80549782589. The next prime is 80549782601. The reversal of 80549782597 is 79528794508.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79902894241 + 646888356 = 282671^2 + 25434^2 .

It is a cyclic number.

It is not a de Polignac number, because 80549782597 - 2³ = 80549782589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80549782507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40274891298 + 40274891299.

It is an arithmetic number, because the mean of its divisors is an integer number (40274891299).

Almost surely, 2^80549782597 is an apocalyptic number.

It is an amenable number.

80549782597 is a deficient number, since it is larger than the sum of its proper divisors (1).

80549782597 is an equidigital number, since it uses as much as digits as its factorization.

80549782597 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50803200, while the sum is 64.

The spelling of 80549782597 in words is "eighty billion, five hundred forty-nine million, seven hundred eighty-two thousand, five hundred ninety-seven".