30467747561 has 4 divisors (see below), whose sum is σ = 30625611732. Its totient is φ = 30309883392.

The previous prime is 30467747551. The next prime is 30467747581. The reversal of 30467747561 is 16574776403.

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 3670057561 + 26797690000 = 60581^2 + 163700^2 .

It is a cyclic number.

It is not a de Polignac number, because 30467747561 - 2¹⁰ = 30467746537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30467747551) 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, 78931796 + ... + 78932181.

It is an arithmetic number, because the mean of its divisors is an integer number (7656402933).

Almost surely, 2^30467747561 is an apocalyptic number.

It is an amenable number.

30467747561 is a deficient number, since it is larger than the sum of its proper divisors (157864171).

30467747561 is a wasteful number, since it uses less digits than its factorization.

30467747561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157864170.

The product of its (nonzero) digits is 2963520, while the sum is 50.

The spelling of 30467747561 in words is "thirty billion, four hundred sixty-seven million, seven hundred forty-seven thousand, five hundred sixty-one".