80362718617 has 2 divisors, whose sum is σ = 80362718618. Its totient is φ = 80362718616.

The previous prime is 80362718609. The next prime is 80362718621. The reversal of 80362718617 is 71681726308.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79082438656 + 1280279961 = 281216^2 + 35781^2 .

It is a cyclic number.

It is not a de Polignac number, because 80362718617 - 2³ = 80362718609 is a prime.

It is a super-3 number, since 3×80362718617³ (a number of 34 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (80362718627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40181359308 + 40181359309.

It is an arithmetic number, because the mean of its divisors is an integer number (40181359309).

Almost surely, 2^80362718617 is an apocalyptic number.

It is an amenable number.

80362718617 is a deficient number, since it is larger than the sum of its proper divisors (1).

80362718617 is an equidigital number, since it uses as much as digits as its factorization.

80362718617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 677376, while the sum is 49.

The spelling of 80362718617 in words is "eighty billion, three hundred sixty-two million, seven hundred eighteen thousand, six hundred seventeen".