80578267361 has 2 divisors, whose sum is σ = 80578267362. Its totient is φ = 80578267360.

The previous prime is 80578267307. The next prime is 80578267381. The reversal of 80578267361 is 16376287508.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56017422400 + 24560844961 = 236680^2 + 156719^2 .

It is a cyclic number.

It is not a de Polignac number, because 80578267361 - 2¹⁰ = 80578266337 is a prime.

It is not a weakly prime, because it can be changed into another prime (80578267381) 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, 40289133680 + 40289133681.

It is an arithmetic number, because the mean of its divisors is an integer number (40289133681).

Almost surely, 2^80578267361 is an apocalyptic number.

It is an amenable number.

80578267361 is a deficient number, since it is larger than the sum of its proper divisors (1).

80578267361 is an equidigital number, since it uses as much as digits as its factorization.

80578267361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3386880, while the sum is 53.

The spelling of 80578267361 in words is "eighty billion, five hundred seventy-eight million, two hundred sixty-seven thousand, three hundred sixty-one".