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13000660250 = 25352002641
BaseRepresentation
bin11000001101110011…
…00101010100011010
31020120001000222011012
430012321211110122
5203111132112000
65550013133522
7640111534364
oct140671452432
936501028135
1013000660250
115571596516
122629a8a2a2
1312c2573396
148b489bd34
15511532735
hex306e6551a

13000660250 has 16 divisors (see below), whose sum is σ = 24337236456. Its totient is φ = 5200264000.

The previous prime is 13000660243. The next prime is 13000660259. The reversal of 13000660250 is 5206600031.

It can be written as a sum of positive squares in 4 ways, for example, as 7621464601 + 5379195649 = 87301^2 + 73343^2 .

It is not an unprimeable number, because it can be changed into a prime (13000660259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26001071 + ... + 26001570.

Almost surely, 213000660250 is an apocalyptic number.

13000660250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13000660250 is a deficient number, since it is larger than the sum of its proper divisors (11336576206).

13000660250 is an equidigital number, since it uses as much as digits as its factorization.

13000660250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52002658 (or 52002648 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The spelling of 13000660250 in words is "thirteen billion, six hundred sixty thousand, two hundred fifty".

Divisors: 1 2 5 10 25 50 125 250 52002641 104005282 260013205 520026410 1300066025 2600132050 6500330125 13000660250