30172443793 has 4 divisors (see below), whose sum is σ = 30172792048. Its totient is φ = 30172095540.

The previous prime is 30172443683. The next prime is 30172443797. The reversal of 30172443793 is 39734427103.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30172443793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30172443797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68830 + ... + 255112.

It is an arithmetic number, because the mean of its divisors is an integer number (7543198012).

Almost surely, 2^30172443793 is an apocalyptic number.

It is an amenable number.

30172443793 is a deficient number, since it is larger than the sum of its proper divisors (348255).

30172443793 is a wasteful number, since it uses less digits than its factorization.

30172443793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348254.

The product of its (nonzero) digits is 381024, while the sum is 43.

The spelling of 30172443793 in words is "thirty billion, one hundred seventy-two million, four hundred forty-three thousand, seven hundred ninety-three".