80018174778413 has 2 divisors, whose sum is σ = 80018174778414. Its totient is φ = 80018174778412.

The previous prime is 80018174778329. The next prime is 80018174778491. The reversal of 80018174778413 is 31487747181008.

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., 63806897878084 + 16211276900329 = 7987922^2 + 4026323^2 .

It is a cyclic number.

It is not a de Polignac number, because 80018174778413 - 2⁴⁰ = 78918663150637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80018174774413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40009087389206 + 40009087389207.

It is an arithmetic number, because the mean of its divisors is an integer number (40009087389207).

Almost surely, 2^{80018174778413} is an apocalyptic number.

It is an amenable number.

80018174778413 is a deficient number, since it is larger than the sum of its proper divisors (1).

80018174778413 is an equidigital number, since it uses as much as digits as its factorization.

80018174778413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8429568, while the sum is 59.

The spelling of 80018174778413 in words is "eighty trillion, eighteen billion, one hundred seventy-four million, seven hundred seventy-eight thousand, four hundred thirteen".