5210866815 has 48 divisors (see below), whose sum is σ = 10473437184. Its totient is φ = 2165549760.

The previous prime is 5210866799. The next prime is 5210866823. The reversal of 5210866815 is 5186680125.

It is not a de Polignac number, because 5210866815 - 2⁴ = 5210866799 is a prime.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 192367 + ... + 217776.

It is an arithmetic number, because the mean of its divisors is an integer number (218196608).

Almost surely, 2^5210866815 is an apocalyptic number.

5210866815 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

5210866815 is an abundant number, since it is smaller than the sum of its proper divisors (5262570369).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5210866815 is a wasteful number, since it uses less digits than its factorization.

5210866815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410180 (or 410169 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 42.

The square root of 5210866815 is about 72186.3339905830. Note that the first 3 decimals coincide. The cubic root of 5210866815 is about 1733.6841992095.

The spelling of 5210866815 in words is "five billion, two hundred ten million, eight hundred sixty-six thousand, eight hundred fifteen".