30136442561 has 4 divisors (see below), whose sum is σ = 30143692800. Its totient is φ = 30129192324.

The previous prime is 30136442551. The next prime is 30136442569. The reversal of 30136442561 is 16524463103.

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 a de Polignac number, because none of the positive numbers 2^k-30136442561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30136442569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3618881 + ... + 3627198.

It is an arithmetic number, because the mean of its divisors is an integer number (7535923200).

Almost surely, 2^30136442561 is an apocalyptic number.

It is an amenable number.

30136442561 is a deficient number, since it is larger than the sum of its proper divisors (7250239).

30136442561 is an equidigital number, since it uses as much as digits as its factorization.

30136442561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7250238.

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 30136442561 in words is "thirty billion, one hundred thirty-six million, four hundred forty-two thousand, five hundred sixty-one".