78758520223 has 2 divisors, whose sum is σ = 78758520224. Its totient is φ = 78758520222.

The previous prime is 78758520173. The next prime is 78758520233. The reversal of 78758520223 is 32202585787.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78758520223 - 2²⁵ = 78724965791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78758520233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39379260111 + 39379260112.

It is an arithmetic number, because the mean of its divisors is an integer number (39379260112).

Almost surely, 2^78758520223 is an apocalyptic number.

78758520223 is a deficient number, since it is larger than the sum of its proper divisors (1).

78758520223 is an equidigital number, since it uses as much as digits as its factorization.

78758520223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1881600, while the sum is 49.

The spelling of 78758520223 in words is "seventy-eight billion, seven hundred fifty-eight million, five hundred twenty thousand, two hundred twenty-three".