654120078439 has 2 divisors, whose sum is σ = 654120078440. Its totient is φ = 654120078438.

The previous prime is 654120078397. The next prime is 654120078449. The reversal of 654120078439 is 934870021456.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 654120078439 - 2¹⁷ = 654119947367 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 654120078392 and 654120078401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (654120078449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327060039219 + 327060039220.

It is an arithmetic number, because the mean of its divisors is an integer number (327060039220).

It is a 1-persistent number, because it is pandigital, but 2⋅654120078439 = 1308240156878 is not.

Almost surely, 2^654120078439 is an apocalyptic number.

654120078439 is a deficient number, since it is larger than the sum of its proper divisors (1).

654120078439 is an equidigital number, since it uses as much as digits as its factorization.

654120078439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 654120078439 in words is "six hundred fifty-four billion, one hundred twenty million, seventy-eight thousand, four hundred thirty-nine".