27256713430433 has 2 divisors, whose sum is σ = 27256713430434. Its totient is φ = 27256713430432.

The previous prime is 27256713430417. The next prime is 27256713430439. The reversal of 27256713430433 is 33403431765272.

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., 17721506734864 + 9535206695569 = 4209692^2 + 3087913^2 .

It is a cyclic number.

It is not a de Polignac number, because 27256713430433 - 2⁴ = 27256713430417 is a prime.

It is not a weakly prime, because it can be changed into another prime (27256713430439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13628356715216 + 13628356715217.

It is an arithmetic number, because the mean of its divisors is an integer number (13628356715217).

Almost surely, 2^{27256713430433} is an apocalyptic number.

It is an amenable number.

27256713430433 is a deficient number, since it is larger than the sum of its proper divisors (1).

27256713430433 is an equidigital number, since it uses as much as digits as its factorization.

27256713430433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7620480, while the sum is 50.

The spelling of 27256713430433 in words is "twenty-seven trillion, two hundred fifty-six billion, seven hundred thirteen million, four hundred thirty thousand, four hundred thirty-three".