5209695878 has 16 divisors (see below), whose sum is σ = 7840281600. Its totient is φ = 2596283976.

The previous prime is 5209695863. The next prime is 5209695889. The reversal of 5209695878 is 8785969025.

It is a super-2 number, since 2×5209695878² = 54281862282500381768, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 815051 + ... + 821417.

It is an arithmetic number, because the mean of its divisors is an integer number (490017600).

Almost surely, 2^5209695878 is an apocalyptic number.

5209695878 is a deficient number, since it is larger than the sum of its proper divisors (2630585722).

5209695878 is a wasteful number, since it uses less digits than its factorization.

5209695878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7651.

The product of its (nonzero) digits is 10886400, while the sum is 59.

The square root of 5209695878 is about 72178.2230177496. The cubic root of 5209695878 is about 1733.5543304101.

The spelling of 5209695878 in words is "five billion, two hundred nine million, six hundred ninety-five thousand, eight hundred seventy-eight".