678023588443 has 2 divisors, whose sum is σ = 678023588444. Its totient is φ = 678023588442.

The previous prime is 678023588377. The next prime is 678023588461. The reversal of 678023588443 is 344885320876.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 678023588443 - 2²¹ = 678021491291 is a prime.

It is a super-3 number, since 3×678023588443³ (a number of 36 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (678023589443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339011794221 + 339011794222.

It is an arithmetic number, because the mean of its divisors is an integer number (339011794222).

Almost surely, 2^678023588443 is an apocalyptic number.

678023588443 is a deficient number, since it is larger than the sum of its proper divisors (1).

678023588443 is an equidigital number, since it uses as much as digits as its factorization.

678023588443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30965760, while the sum is 58.

The spelling of 678023588443 in words is "six hundred seventy-eight billion, twenty-three million, five hundred eighty-eight thousand, four hundred forty-three".