5278641805 has 8 divisors (see below), whose sum is σ = 6334946712. Its totient is φ = 4222529088.

The previous prime is 5278641803. The next prime is 5278641817. The reversal of 5278641805 is 5081468725.

It can be written as a sum of positive squares in 4 ways, for example, as 608559561 + 4670082244 = 24669^2 + 68338^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5278641805 - 2¹ = 5278641803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5278641803) 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 in 7 ways as a sum of consecutive naturals, for example, 21547 + ... + 104983.

It is an arithmetic number, because the mean of its divisors is an integer number (791868339).

Almost surely, 2^5278641805 is an apocalyptic number.

It is an amenable number.

5278641805 is a deficient number, since it is larger than the sum of its proper divisors (1056304907).

5278641805 is a wasteful number, since it uses less digits than its factorization.

5278641805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96095.

The product of its (nonzero) digits is 537600, while the sum is 46.

The square root of 5278641805 is about 72654.2621254941. The cubic root of 5278641805 is about 1741.1682167958.

The spelling of 5278641805 in words is "five billion, two hundred seventy-eight million, six hundred forty-one thousand, eight hundred five".