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12930516647 = 18301706547
BaseRepresentation
bin11000000101011100…
…00000011010100111
31020101011001022012222
430002232000122213
5202440203013042
65535025502555
7635300402156
oct140256003247
936334038188
1012930516647
115535a375a4
12260a4a1a5b
1312b0b843a9
148a943d59d
1550a2c92d2
hex302b806a7

12930516647 has 4 divisors (see below), whose sum is σ = 12931241496. Its totient is φ = 12929791800.

The previous prime is 12930516629. The next prime is 12930516661. The reversal of 12930516647 is 74661503921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12930516647 - 216 = 12930451111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12930516598 and 12930516607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12930516847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334973 + ... + 371574.

It is an arithmetic number, because the mean of its divisors is an integer number (3232810374).

Almost surely, 212930516647 is an apocalyptic number.

12930516647 is a deficient number, since it is larger than the sum of its proper divisors (724849).

12930516647 is an equidigital number, since it uses as much as digits as its factorization.

12930516647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724848.

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 12930516647 in words is "twelve billion, nine hundred thirty million, five hundred sixteen thousand, six hundred forty-seven".

Divisors: 1 18301 706547 12930516647