30181349980909 has 4 divisors (see below), whose sum is σ = 30209583237340. Its totient is φ = 30153116724480.

The previous prime is 30181349980891. The next prime is 30181349980949. The reversal of 30181349980909 is 90908994318103.

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 5107826002500 + 25073523978409 = 2260050^2 + 5007347^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30181349980909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30181349980949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14116626612 + ... + 14116628749.

It is an arithmetic number, because the mean of its divisors is an integer number (7552395809335).

Almost surely, 2^{30181349980909} is an apocalyptic number.

It is an amenable number.

30181349980909 is a deficient number, since it is larger than the sum of its proper divisors (28233256431).

30181349980909 is a wasteful number, since it uses less digits than its factorization.

30181349980909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28233256430.

The product of its (nonzero) digits is 15116544, while the sum is 64.

The spelling of 30181349980909 in words is "thirty trillion, one hundred eighty-one billion, three hundred forty-nine million, nine hundred eighty thousand, nine hundred nine".