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13018271880 = 2335108485599
BaseRepresentation
bin11000001111111001…
…10001000010001000
31020121021011201202210
430013330301002020
5203130134200010
65551442425120
7640414325265
oct140774610210
936537151683
1013018271880
115580525389
1226339621a0
1312c60cb673
148b6d6426c
15512d60b20
hex307f31088

13018271880 has 32 divisors (see below), whose sum is σ = 39054816000. Its totient is φ = 3471539136.

The previous prime is 13018271831. The next prime is 13018271909. The reversal of 13018271880 is 8817281031.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54242680 + ... + 54242919.

It is an arithmetic number, because the mean of its divisors is an integer number (1220463000).

Almost surely, 213018271880 is an apocalyptic number.

13018271880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13018271880 is an abundant number, since it is smaller than the sum of its proper divisors (26036544120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13018271880 is a wasteful number, since it uses less digits than its factorization.

13018271880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108485613 (or 108485609 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 39.

The spelling of 13018271880 in words is "thirteen billion, eighteen million, two hundred seventy-one thousand, eight hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 108485599 216971198 325456797 433942396 542427995 650913594 867884792 1084855990 1301827188 1627283985 2169711980 2603654376 3254567970 4339423960 6509135940 13018271880