78683027873 has 2 divisors, whose sum is σ = 78683027874. Its totient is φ = 78683027872.

The previous prime is 78683027849. The next prime is 78683027903. The reversal of 78683027873 is 37872038687.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41539331344 + 37143696529 = 203812^2 + 192727^2 .

It is a cyclic number.

It is not a de Polignac number, because 78683027873 - 2²⁶ = 78615919009 is a prime.

It is not a weakly prime, because it can be changed into another prime (78683027473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39341513936 + 39341513937.

It is an arithmetic number, because the mean of its divisors is an integer number (39341513937).

Almost surely, 2^78683027873 is an apocalyptic number.

It is an amenable number.

78683027873 is a deficient number, since it is larger than the sum of its proper divisors (1).

78683027873 is an equidigital number, since it uses as much as digits as its factorization.

78683027873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18966528, while the sum is 59.

The spelling of 78683027873 in words is "seventy-eight billion, six hundred eighty-three million, twenty-seven thousand, eight hundred seventy-three".