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134868820880 = 2451739744857
BaseRepresentation
bin111110110011011001…
…1101110001110010000
3110220010020110222021002
41331212303232032100
54202202404232010
6141542522521132
712513114030263
oct1754663561620
9426106428232
10134868820880
1152219a2a342
122217b3661a8
13c9447c4031
146755d80cda
1537955071a5
hex1f66cee390

134868820880 has 40 divisors (see below), whose sum is σ = 315382584312. Its totient is φ = 53635687424.

The previous prime is 134868820861. The next prime is 134868820883. The reversal of 134868820880 is 88028868431.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18745991056 + 116122829824 = 136916^2 + 340768^2 .

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

It is not an unprimeable number, because it can be changed into a prime (134868820883) 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, 4858589 + ... + 4886268.

Almost surely, 2134868820880 is an apocalyptic number.

134868820880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

134868820880 is an abundant number, since it is smaller than the sum of its proper divisors (180513763432).

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

134868820880 is a wasteful number, since it uses less digits than its factorization.

134868820880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9745043 (or 9745037 counting only the distinct ones).

The product of its (nonzero) digits is 4718592, while the sum is 56.

The spelling of 134868820880 in words is "one hundred thirty-four billion, eight hundred sixty-eight million, eight hundred twenty thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 173 346 692 865 1384 1730 2768 3460 6920 13840 9744857 19489714 38979428 48724285 77958856 97448570 155917712 194897140 389794280 779588560 1685860261 3371720522 6743441044 8429301305 13486882088 16858602610 26973764176 33717205220 67434410440 134868820880