30161917285 has 4 divisors (see below), whose sum is σ = 36194300748. Its totient is φ = 24129533824.

The previous prime is 30161917267. The next prime is 30161917319. The reversal of 30161917285 is 58271916103.

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 21410127684 + 8751789601 = 146322^2 + 93551^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30161917285 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 3016191724 + ... + 3016191733.

It is an arithmetic number, because the mean of its divisors is an integer number (9048575187).

Almost surely, 2^30161917285 is an apocalyptic number.

It is an amenable number.

30161917285 is a deficient number, since it is larger than the sum of its proper divisors (6032383463).

30161917285 is an equidigital number, since it uses as much as digits as its factorization.

30161917285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6032383462.

The product of its (nonzero) digits is 90720, while the sum is 43.

The spelling of 30161917285 in words is "thirty billion, one hundred sixty-one million, nine hundred seventeen thousand, two hundred eighty-five".