78582384523 has 2 divisors, whose sum is σ = 78582384524. Its totient is φ = 78582384522.

The previous prime is 78582384509. The next prime is 78582384539. The reversal of 78582384523 is 32548328587.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78582384523 - 2²⁵ = 78548830091 is a prime.

It is not a weakly prime, because it can be changed into another prime (78582385523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39291192261 + 39291192262.

It is an arithmetic number, because the mean of its divisors is an integer number (39291192262).

Almost surely, 2^78582384523 is an apocalyptic number.

78582384523 is a deficient number, since it is larger than the sum of its proper divisors (1).

78582384523 is an equidigital number, since it uses as much as digits as its factorization.

78582384523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12902400, while the sum is 55.

The spelling of 78582384523 in words is "seventy-eight billion, five hundred eighty-two million, three hundred eighty-four thousand, five hundred twenty-three".