78820896533 has 2 divisors, whose sum is σ = 78820896534. Its totient is φ = 78820896532.

The previous prime is 78820896443. The next prime is 78820896571. The reversal of 78820896533 is 33569802887.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76304670289 + 2516226244 = 276233^2 + 50162^2 .

It is a cyclic number.

It is not a de Polignac number, because 78820896533 - 2⁸ = 78820896277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78850896533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39410448266 + 39410448267.

It is an arithmetic number, because the mean of its divisors is an integer number (39410448267).

Almost surely, 2^78820896533 is an apocalyptic number.

It is an amenable number.

78820896533 is a deficient number, since it is larger than the sum of its proper divisors (1).

78820896533 is an equidigital number, since it uses as much as digits as its factorization.

78820896533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17418240, while the sum is 59.

The spelling of 78820896533 in words is "seventy-eight billion, eight hundred twenty million, eight hundred ninety-six thousand, five hundred thirty-three".