78108263 has 2 divisors, whose sum is σ = 78108264. Its totient is φ = 78108262.

The previous prime is 78108241. The next prime is 78108301. The reversal of 78108263 is 36280187.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78108263 - 2¹² = 78104167 is a prime.

It is a super-2 number, since 2×78108263² = 12201801497754338, which contains 22 as substring.

It is equal to p_4565519 and since 78108263 and 4565519 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78108463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39054131 + 39054132.

It is an arithmetic number, because the mean of its divisors is an integer number (39054132).

Almost surely, 2^78108263 is an apocalyptic number.

78108263 is a deficient number, since it is larger than the sum of its proper divisors (1).

78108263 is an equidigital number, since it uses as much as digits as its factorization.

78108263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 78108263 is about 8837.8879264222. The cubic root of 78108263 is about 427.4634566303.

The spelling of 78108263 in words is "seventy-eight million, one hundred eight thousand, two hundred sixty-three".