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30443668809 = 3181121612593
BaseRepresentation
bin11100010110100101…
…011000010101001001
32220120200010121120020
4130112211120111021
5444322034400214
621552521251053
72125264625631
oct342645302511
986520117506
1030443668809
1111a02725a74
125a97633a89
132b42286118
14168b3396c1
15bd2a664a9
hex716958549

30443668809 has 16 divisors (see below), whose sum is σ = 40648436544. Its totient is φ = 20267366400.

The previous prime is 30443668793. The next prime is 30443668811. The reversal of 30443668809 is 90886634403.

It is a happy number.

It is not a de Polignac number, because 30443668809 - 24 = 30443668793 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30443668609) 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, 11739417 + ... + 11742009.

It is an arithmetic number, because the mean of its divisors is an integer number (2540527284).

Almost surely, 230443668809 is an apocalyptic number.

It is an amenable number.

30443668809 is a deficient number, since it is larger than the sum of its proper divisors (10204767735).

30443668809 is a wasteful number, since it uses less digits than its factorization.

30443668809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6568.

The product of its (nonzero) digits is 2985984, while the sum is 51.

The spelling of 30443668809 in words is "thirty billion, four hundred forty-three million, six hundred sixty-eight thousand, eight hundred nine".

Divisors: 1 3 1811 2161 2593 5433 6483 7779 3913571 4695923 5603473 11740713 14087769 16810419 10147889603 30443668809