30357981134209 has 4 divisors (see below), whose sum is σ = 31098419698500. Its totient is φ = 29617542569920.

The previous prime is 30357981134203. The next prime is 30357981134249. The reversal of 30357981134209 is 90243118975303.

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 18440986724209 + 11916994410000 = 4294297^2 + 3452100^2 .

It is a cyclic number.

It is not a de Polignac number, because 30357981134209 - 2¹³ = 30357981126017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30357981134209.

It is not an unprimeable number, because it can be changed into a prime (30357981134203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370219282084 + ... + 370219282165.

It is an arithmetic number, because the mean of its divisors is an integer number (7774604924625).

Almost surely, 2^{30357981134209} is an apocalyptic number.

It is an amenable number.

30357981134209 is a deficient number, since it is larger than the sum of its proper divisors (740438564291).

30357981134209 is an equidigital number, since it uses as much as digits as its factorization.

30357981134209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740438564290.

The product of its (nonzero) digits is 4898880, while the sum is 55.

The spelling of 30357981134209 in words is "thirty trillion, three hundred fifty-seven billion, nine hundred eighty-one million, one hundred thirty-four thousand, two hundred nine".