80544061361 has 2 divisors, whose sum is σ = 80544061362. Its totient is φ = 80544061360.

The previous prime is 80544061327. The next prime is 80544061379. The reversal of 80544061361 is 16316044508.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78206919025 + 2337142336 = 279655^2 + 48344^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80544061361 is a prime.

It is not a weakly prime, because it can be changed into another prime (80544061061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40272030680 + 40272030681.

It is an arithmetic number, because the mean of its divisors is an integer number (40272030681).

Almost surely, 2^80544061361 is an apocalyptic number.

It is an amenable number.

80544061361 is a deficient number, since it is larger than the sum of its proper divisors (1).

80544061361 is an equidigital number, since it uses as much as digits as its factorization.

80544061361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 80544061361 in words is "eighty billion, five hundred forty-four million, sixty-one thousand, three hundred sixty-one".