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12730018873 = 11131072113943
BaseRepresentation
bin10111101101100010…
…01010110000111001
31012212011202221222111
423312301022300321
5202032341100443
65503104252321
7630314242435
oct136661126071
935764687874
1012730018873
115442844660
1225733110a1
13127b484660
1488a96b9c5
154e78c269d
hex2f6c4ac39

12730018873 has 32 divisors (see below), whose sum is σ = 15170706432. Its totient is φ = 10529870400.

The previous prime is 12730018859. The next prime is 12730018879. The reversal of 12730018873 is 37881003721.

It is a cyclic number.

It is not a de Polignac number, because 12730018873 - 217 = 12729887801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12730018879) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3226540 + ... + 3230482.

It is an arithmetic number, because the mean of its divisors is an integer number (474084576).

Almost surely, 212730018873 is an apocalyptic number.

12730018873 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12730018873 is a deficient number, since it is larger than the sum of its proper divisors (2440687559).

12730018873 is a wasteful number, since it uses less digits than its factorization.

12730018873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4285.

The product of its (nonzero) digits is 56448, while the sum is 40.

The spelling of 12730018873 in words is "twelve billion, seven hundred thirty million, eighteen thousand, eight hundred seventy-three".

Divisors: 1 11 13 107 143 211 1177 1391 2321 2743 3943 15301 22577 30173 43373 51259 248347 293501 421901 563849 831973 3228511 4640911 5484713 9151703 10815649 60331843 89021111 118972139 979232221 1157274443 12730018873