5478205123 has 2 divisors, whose sum is σ = 5478205124. Its totient is φ = 5478205122.

The previous prime is 5478205087. The next prime is 5478205141. The reversal of 5478205123 is 3215028745.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5478205123 is a prime.

It is not a weakly prime, because it can be changed into another prime (5478205193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2739102561 + 2739102562.

It is an arithmetic number, because the mean of its divisors is an integer number (2739102562).

Almost surely, 2^5478205123 is an apocalyptic number.

5478205123 is a deficient number, since it is larger than the sum of its proper divisors (1).

5478205123 is an equidigital number, since it uses as much as digits as its factorization.

5478205123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 5478205123 is about 74014.8979800689. The cubic root of 5478205123 is about 1762.8394595757.

The spelling of 5478205123 in words is "five billion, four hundred seventy-eight million, two hundred five thousand, one hundred twenty-three".