30643372985 has 4 divisors (see below), whose sum is σ = 36772047588. Its totient is φ = 24514698384.

The previous prime is 30643372961. The next prime is 30643373003. The reversal of 30643372985 is 58927334603.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21371223721 + 9272149264 = 146189^2 + 96292^2 .

It is a cyclic number.

It is not a de Polignac number, because 30643372985 - 2²⁰ = 30642324409 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 3064337294 + ... + 3064337303.

It is an arithmetic number, because the mean of its divisors is an integer number (9193011897).

Almost surely, 2^30643372985 is an apocalyptic number.

It is an amenable number.

30643372985 is a deficient number, since it is larger than the sum of its proper divisors (6128674603).

30643372985 is an equidigital number, since it uses as much as digits as its factorization.

30643372985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6128674602.

The product of its (nonzero) digits is 3265920, while the sum is 50.

The spelling of 30643372985 in words is "thirty billion, six hundred forty-three million, three hundred seventy-two thousand, nine hundred eighty-five".