30648228661 has 4 divisors (see below), whose sum is σ = 31017484512. Its totient is φ = 30278972812.

The previous prime is 30648228599. The next prime is 30648228761. The reversal of 30648228661 is 16682284603.

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.

It is a cyclic number.

It is not a de Polignac number, because 30648228661 - 2¹⁷ = 30648097589 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 (30648228761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184627801 + ... + 184627966.

It is an arithmetic number, because the mean of its divisors is an integer number (7754371128).

Almost surely, 2^30648228661 is an apocalyptic number.

It is an amenable number.

30648228661 is a deficient number, since it is larger than the sum of its proper divisors (369255851).

30648228661 is an equidigital number, since it uses as much as digits as its factorization.

30648228661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369255850.

The product of its (nonzero) digits is 663552, while the sum is 46.

The spelling of 30648228661 in words is "thirty billion, six hundred forty-eight million, two hundred twenty-eight thousand, six hundred sixty-one".