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26880165020 = 2251344008251
BaseRepresentation
bin11001000010001011…
…101100010010011100
32120101022202212100102
4121002023230102130
5420022310240040
620203143120232
71641054430022
oct310213542234
976338685312
1026880165020
1110444174915
125262143078
1326c4c13ab7
14142dd6a712
15a74cb3515
hex6422ec49c

26880165020 has 12 divisors (see below), whose sum is σ = 56448346584. Its totient is φ = 10752066000.

The previous prime is 26880164981. The next prime is 26880165049. The reversal of 26880165020 is 2056108862.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 672004106 + ... + 672004145.

It is an arithmetic number, because the mean of its divisors is an integer number (4704028882).

Almost surely, 226880165020 is an apocalyptic number.

26880165020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26880165020 is an abundant number, since it is smaller than the sum of its proper divisors (29568181564).

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

26880165020 is a wasteful number, since it uses less digits than its factorization.

26880165020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344008260 (or 1344008258 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The spelling of 26880165020 in words is "twenty-six billion, eight hundred eighty million, one hundred sixty-five thousand, twenty".

Divisors: 1 2 4 5 10 20 1344008251 2688016502 5376033004 6720041255 13440082510 26880165020