78223253203 has 2 divisors, whose sum is σ = 78223253204. Its totient is φ = 78223253202.

The previous prime is 78223253179. The next prime is 78223253293. The reversal of 78223253203 is 30235232287.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78223253203 - 2⁹ = 78223252691 is a prime.

It is a super-2 number, since 2×78223253203² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78223253293) 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, 39111626601 + 39111626602.

It is an arithmetic number, because the mean of its divisors is an integer number (39111626602).

Almost surely, 2^78223253203 is an apocalyptic number.

78223253203 is a deficient number, since it is larger than the sum of its proper divisors (1).

78223253203 is an equidigital number, since it uses as much as digits as its factorization.

78223253203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 37.

The spelling of 78223253203 in words is "seventy-eight billion, two hundred twenty-three million, two hundred fifty-three thousand, two hundred three".