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30661060609 = 1751032
BaseRepresentation
bin11100100011100010…
…101010100000000001
32221010211012021001101
4130203202222200001
51000243212414414
622030244534401
72133544500154
oct344342524001
987124167041
1030661060609
1112004407713
125b383b1401
132b7831c61a
1416ac167c9b
15be6ba8a74
hex7238aa801

30661060609 has 3 divisors (see below), whose sum is σ = 30661235713. Its totient is φ = 30660885506.

The previous prime is 30661060567. The next prime is 30661060613. The reversal of 30661060609 is 90606016603.

The square root of 30661060609 is 175103.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 30661060609 - 219 = 30660536321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30661060669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 87552 + ... + 262654.

Almost surely, 230661060609 is an apocalyptic number.

30661060609 is the 175103-rd square number.

30661060609 is the 87552-nd centered octagonal number.

It is an amenable number.

30661060609 is a deficient number, since it is larger than the sum of its proper divisors (175104).

30661060609 is an frugal number, since it uses more digits than its factorization.

30661060609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350206 (or 175103 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 37.

The spelling of 30661060609 in words is "thirty billion, six hundred sixty-one million, sixty thousand, six hundred nine".

Divisors: 1 175103 30661060609