78820028263 has 2 divisors, whose sum is σ = 78820028264. Its totient is φ = 78820028262.

The previous prime is 78820028237. The next prime is 78820028293. The reversal of 78820028263 is 36282002887.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78820028263 - 2⁹ = 78820027751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78820028293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39410014131 + 39410014132.

It is an arithmetic number, because the mean of its divisors is an integer number (39410014132).

Almost surely, 2^78820028263 is an apocalyptic number.

78820028263 is a deficient number, since it is larger than the sum of its proper divisors (1).

78820028263 is an equidigital number, since it uses as much as digits as its factorization.

78820028263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 516096, while the sum is 46.

The spelling of 78820028263 in words is "seventy-eight billion, eight hundred twenty million, twenty-eight thousand, two hundred sixty-three".