252109506843 has 6 divisors (see below), whose sum is σ = 364158176564. Its totient is φ = 168073004556.

The previous prime is 252109506839. The next prime is 252109506853. The reversal of 252109506843 is 348605901252.

252109506843 is a `hidden beast` number, since 2 + 52 + 10 + 9 + 506 + 84 + 3 = 666.

It is not a de Polignac number, because 252109506843 - 2² = 252109506839 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252109506853) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14006083705 + ... + 14006083722.

Almost surely, 2^252109506843 is an apocalyptic number.

252109506843 is a deficient number, since it is larger than the sum of its proper divisors (112048669721).

252109506843 is a wasteful number, since it uses less digits than its factorization.

252109506843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28012167433 (or 28012167430 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 252109506843 in words is "two hundred fifty-two billion, one hundred nine million, five hundred six thousand, eight hundred forty-three".