30230505561 has 16 divisors (see below), whose sum is σ = 44533943424. Its totient is φ = 18143457024.

The previous prime is 30230505553. The next prime is 30230505581. The reversal of 30230505561 is 16550503203.

It is not a de Polignac number, because 30230505561 - 2³ = 30230505553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30230505581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12884806 + ... + 12887151.

It is an arithmetic number, because the mean of its divisors is an integer number (2783371464).

Almost surely, 2^30230505561 is an apocalyptic number.

It is an amenable number.

30230505561 is a deficient number, since it is larger than the sum of its proper divisors (14303437863).

30230505561 is a wasteful number, since it uses less digits than its factorization.

30230505561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25772000.

The product of its (nonzero) digits is 13500, while the sum is 30.

The spelling of 30230505561 in words is "thirty billion, two hundred thirty million, five hundred five thousand, five hundred sixty-one".