18080543513 has 2 divisors, whose sum is σ = 18080543514. Its totient is φ = 18080543512.

The previous prime is 18080543483. The next prime is 18080543539. The reversal of 18080543513 is 31534508081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18045354889 + 35188624 = 134333^2 + 5932^2 .

It is a cyclic number.

It is not a de Polignac number, because 18080543513 - 2¹⁶ = 18080477977 is a prime.

It is not a weakly prime, because it can be changed into another prime (18080543813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9040271756 + 9040271757.

It is an arithmetic number, because the mean of its divisors is an integer number (9040271757).

Almost surely, 2^18080543513 is an apocalyptic number.

It is an amenable number.

18080543513 is a deficient number, since it is larger than the sum of its proper divisors (1).

18080543513 is an equidigital number, since it uses as much as digits as its factorization.

18080543513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57600, while the sum is 38.

The spelling of 18080543513 in words is "eighteen billion, eighty million, five hundred forty-three thousand, five hundred thirteen".