80477370709 has 2 divisors, whose sum is σ = 80477370710. Its totient is φ = 80477370708.

The previous prime is 80477370667. The next prime is 80477370731. The reversal of 80477370709 is 90707377408.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77828724484 + 2648646225 = 278978^2 + 51465^2 .

It is a cyclic number.

It is not a de Polignac number, because 80477370709 - 2¹⁹ = 80476846421 is a prime.

It is a super-2 number, since 2×80477370709² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80477370749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40238685354 + 40238685355.

It is an arithmetic number, because the mean of its divisors is an integer number (40238685355).

Almost surely, 2^80477370709 is an apocalyptic number.

It is an amenable number.

80477370709 is a deficient number, since it is larger than the sum of its proper divisors (1).

80477370709 is an equidigital number, since it uses as much as digits as its factorization.

80477370709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2074464, while the sum is 52.

The spelling of 80477370709 in words is "eighty billion, four hundred seventy-seven million, three hundred seventy thousand, seven hundred nine".