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13988690206020 = 2233525904981863
BaseRepresentation
bin1100101110001111111011…
…1010010001110101000100
31211112022020212112220002000
43023203332322101311010
53313142314143043040
645430152054545300
72642435532604215
oct313437672216504
954468225486060
1013988690206020
11450362aa34012
12169b128068230
137a6187aac96a
143650b039940c
15193d28068130
hexcb8fee91d44

13988690206020 has 48 divisors (see below), whose sum is σ = 43520369531520. Its totient is φ = 3730317388128.

The previous prime is 13988690205989. The next prime is 13988690206033. The reversal of 13988690206020 is 2060209688931.

13988690206020 is a `hidden beast` number, since 1 + 3 + 9 + 8 + 8 + 6 + 9 + 0 + 20 + 602 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12952490392 + ... + 12952491471.

It is an arithmetic number, because the mean of its divisors is an integer number (906674365240).

Almost surely, 213988690206020 is an apocalyptic number.

13988690206020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13988690206020 is an abundant number, since it is smaller than the sum of its proper divisors (29531679325500).

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

13988690206020 is a wasteful number, since it uses less digits than its factorization.

13988690206020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25904981881 (or 25904981873 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The spelling of 13988690206020 in words is "thirteen trillion, nine hundred eighty-eight billion, six hundred ninety million, two hundred six thousand, twenty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 45 54 60 90 108 135 180 270 540 25904981863 51809963726 77714945589 103619927452 129524909315 155429891178 233144836767 259049818630 310859782356 388574727945 466289673534 518099637260 699434510301 777149455890 932579347068 1165724183835 1398869020602 1554298911780 2331448367670 2797738041204 3497172551505 4662896735340 6994345103010 13988690206020