5478205081 has 2 divisors, whose sum is σ = 5478205082. Its totient is φ = 5478205080.

The previous prime is 5478205079. The next prime is 5478205087. The reversal of 5478205081 is 1805028745.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3547393600 + 1930811481 = 59560^2 + 43941^2 .

It is a cyclic number.

It is not a de Polignac number, because 5478205081 - 2¹ = 5478205079 is a prime.

It is a super-2 number, since 2×5478205081² = 60021461818988433122, which contains 22 as substring.

Together with 5478205079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5478205087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2739102540 + 2739102541.

It is an arithmetic number, because the mean of its divisors is an integer number (2739102541).

Almost surely, 2^5478205081 is an apocalyptic number.

It is an amenable number.

5478205081 is a deficient number, since it is larger than the sum of its proper divisors (1).

5478205081 is an equidigital number, since it uses as much as digits as its factorization.

5478205081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 89600, while the sum is 40.

The square root of 5478205081 is about 74014.8976963422. The cubic root of 5478205081 is about 1762.8394550706.

The spelling of 5478205081 in words is "five billion, four hundred seventy-eight million, two hundred five thousand, eighty-one".