80702441587861 has 2 divisors, whose sum is σ = 80702441587862. Its totient is φ = 80702441587860.

The previous prime is 80702441587813. The next prime is 80702441587877. The reversal of 80702441587861 is 16878514420708.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49816690912836 + 30885750675025 = 7058094^2 + 5557495^2 .

It is a cyclic number.

It is not a de Polignac number, because 80702441587861 - 2¹⁷ = 80702441456789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80702441587861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80702441587811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40351220793930 + 40351220793931.

It is an arithmetic number, because the mean of its divisors is an integer number (40351220793931).

Almost surely, 2^{80702441587861} is an apocalyptic number.

It is an amenable number.

80702441587861 is a deficient number, since it is larger than the sum of its proper divisors (1).

80702441587861 is an equidigital number, since it uses as much as digits as its factorization.

80702441587861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24084480, while the sum is 61.

The spelling of 80702441587861 in words is "eighty trillion, seven hundred two billion, four hundred forty-one million, five hundred eighty-seven thousand, eight hundred sixty-one".