80257133609 has 2 divisors, whose sum is σ = 80257133610. Its totient is φ = 80257133608.

The previous prime is 80257133543. The next prime is 80257133623. The reversal of 80257133609 is 90633175208.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67913923609 + 12343210000 = 260603^2 + 111100^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80257133609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80257133609.

It is not a weakly prime, because it can be changed into another prime (80257138609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40128566804 + 40128566805.

It is an arithmetic number, because the mean of its divisors is an integer number (40128566805).

Almost surely, 2^80257133609 is an apocalyptic number.

It is an amenable number.

80257133609 is a deficient number, since it is larger than the sum of its proper divisors (1).

80257133609 is an equidigital number, since it uses as much as digits as its factorization.

80257133609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 80257133609 in words is "eighty billion, two hundred fifty-seven million, one hundred thirty-three thousand, six hundred nine".