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20343665153360 = 245416202336937
BaseRepresentation
bin1001010000000101000001…
…11011110101010101010000
32200000211120000002011010002
410220002200323311111100
510131302311234401420
6111133430055025132
74166531662436333
oct450024073652520
980024500064102
1020343665153360
11653377769133a
1223468a436b1a8
13b475266077a3
145048d263a61a
152542babad075
hex1280a0ef5550

20343665153360 has 40 divisors (see below), whose sum is σ = 48452656159656. Its totient is φ = 7938991278080.

The previous prime is 20343665153359. The next prime is 20343665153387. The reversal of 20343665153360 is 6335156634302.

It can be written as a sum of positive squares in 4 ways, for example, as 842114558224 + 19501550595136 = 917668^2 + 4416056^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

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, 3101165189 + ... + 3101171748.

Almost surely, 220343665153360 is an apocalyptic number.

20343665153360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20343665153360 is an abundant number, since it is smaller than the sum of its proper divisors (28108991006296).

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

20343665153360 is a wasteful number, since it uses less digits than its factorization.

20343665153360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6202336991 (or 6202336985 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 47.

The spelling of 20343665153360 in words is "twenty trillion, three hundred forty-three billion, six hundred sixty-five million, one hundred fifty-three thousand, three hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 40 41 80 82 164 205 328 410 656 820 1640 3280 6202336937 12404673874 24809347748 31011684685 49618695496 62023369370 99237390992 124046738740 248093477480 254295814417 496186954960 508591628834 1017183257668 1271479072085 2034366515336 2542958144170 4068733030672 5085916288340 10171832576680 20343665153360