80408517461 has 2 divisors, whose sum is σ = 80408517462. Its totient is φ = 80408517460.

The previous prime is 80408517377. The next prime is 80408517479. The reversal of 80408517461 is 16471580408.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68463339025 + 11945178436 = 261655^2 + 109294^2 .

It is a cyclic number.

It is not a de Polignac number, because 80408517461 - 2²⁶ = 80341408597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80408513461) 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, 40204258730 + 40204258731.

It is an arithmetic number, because the mean of its divisors is an integer number (40204258731).

Almost surely, 2^80408517461 is an apocalyptic number.

It is an amenable number.

80408517461 is a deficient number, since it is larger than the sum of its proper divisors (1).

80408517461 is an equidigital number, since it uses as much as digits as its factorization.

80408517461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 215040, while the sum is 44.

The spelling of 80408517461 in words is "eighty billion, four hundred eight million, five hundred seventeen thousand, four hundred sixty-one".