5278440805 has 16 divisors (see below), whose sum is σ = 6960406464. Its totient is φ = 3810839680.

The previous prime is 5278440803. The next prime is 5278440809. The reversal of 5278440805 is 5080448725.

It is a happy number.

It is not a de Polignac number, because 5278440805 - 2¹ = 5278440803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5278440803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 342727 + ... + 357796.

It is an arithmetic number, because the mean of its divisors is an integer number (435025404).

Almost surely, 2^5278440805 is an apocalyptic number.

5278440805 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5278440805 is a deficient number, since it is larger than the sum of its proper divisors (1681965659).

5278440805 is a wasteful number, since it uses less digits than its factorization.

5278440805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700676.

The product of its (nonzero) digits is 358400, while the sum is 43.

The square root of 5278440805 is about 72652.8788486733. The cubic root of 5278440805 is about 1741.1461164610.

The spelling of 5278440805 in words is "five billion, two hundred seventy-eight million, four hundred forty thousand, eight hundred five".