30561216612643 has 8 divisors (see below), whose sum is σ = 30726419435712. Its totient is φ = 30396440120616.

The previous prime is 30561216612623. The next prime is 30561216612659. The reversal of 30561216612643 is 34621661216503.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30561216612643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30561216612593 and 30561216612602.

It is not an unprimeable number, because it can be changed into a prime (30561216612623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106439005 + ... + 106725742.

It is an arithmetic number, because the mean of its divisors is an integer number (3840802429464).

Almost surely, 2^{30561216612643} is an apocalyptic number.

30561216612643 is a deficient number, since it is larger than the sum of its proper divisors (165202823069).

30561216612643 is a wasteful number, since it uses less digits than its factorization.

30561216612643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213165521.

The product of its (nonzero) digits is 933120, while the sum is 46.

The spelling of 30561216612643 in words is "thirty trillion, five hundred sixty-one billion, two hundred sixteen million, six hundred twelve thousand, six hundred forty-three".