99782843187 has 8 divisors (see below), whose sum is σ = 140869896336. Its totient is φ = 62608842752.

The previous prime is 99782843179. The next prime is 99782843219. The reversal of 99782843187 is 78134828799.

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 99782843187 - 2³ = 99782843179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99782843887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 978263118 + ... + 978263219.

It is an arithmetic number, because the mean of its divisors is an integer number (17608737042).

Almost surely, 2^99782843187 is an apocalyptic number.

99782843187 is a deficient number, since it is larger than the sum of its proper divisors (41087053149).

99782843187 is a wasteful number, since it uses less digits than its factorization.

99782843187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1956526357.

The product of its digits is 48771072, while the sum is 66.

The spelling of 99782843187 in words is "ninety-nine billion, seven hundred eighty-two million, eight hundred forty-three thousand, one hundred eighty-seven".