30144061561 has 4 divisors (see below), whose sum is σ = 30286924624. Its totient is φ = 30001198500.

The previous prime is 30144061543. The next prime is 30144061601. The reversal of 30144061561 is 16516044103.

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 30144061561 - 2⁵ = 30144061529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30144062561) 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, 71431215 + ... + 71431636.

It is an arithmetic number, because the mean of its divisors is an integer number (7571731156).

Almost surely, 2^30144061561 is an apocalyptic number.

It is an amenable number.

30144061561 is a deficient number, since it is larger than the sum of its proper divisors (142863063).

30144061561 is a wasteful number, since it uses less digits than its factorization.

30144061561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142863062.

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 30144061561 in words is "thirty billion, one hundred forty-four million, sixty-one thousand, five hundred sixty-one".