78854817703 has 2 divisors, whose sum is σ = 78854817704. Its totient is φ = 78854817702.

The previous prime is 78854817683. The next prime is 78854817737. The reversal of 78854817703 is 30771845887.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78854817703 - 2⁹ = 78854817191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78854812703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39427408851 + 39427408852.

It is an arithmetic number, because the mean of its divisors is an integer number (39427408852).

Almost surely, 2^78854817703 is an apocalyptic number.

78854817703 is a deficient number, since it is larger than the sum of its proper divisors (1).

78854817703 is an equidigital number, since it uses as much as digits as its factorization.

78854817703 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10536960, while the sum is 58.

The spelling of 78854817703 in words is "seventy-eight billion, eight hundred fifty-four million, eight hundred seventeen thousand, seven hundred three".