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212755008893 = 72192931254197
BaseRepresentation
bin1100011000100100101…
…1111100110101111101
3202100011021002021100012
43012021023330311331
511441210240241033
6241423250113005
721241160510600
oct3061113746575
9670137067305
10212755008893
1182257724169
123529727b765
13170a7a1330b
14a4240b6337
155803131248
hex31892fcd7d

212755008893 has 48 divisors (see below), whose sum is σ = 278194291200. Its totient is φ = 161424627840.

The previous prime is 212755008889. The next prime is 212755008911. The reversal of 212755008893 is 398800557212.

It is a happy number.

It is not a de Polignac number, because 212755008893 - 22 = 212755008889 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212755008833) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 709871 + ... + 964067.

It is an arithmetic number, because the mean of its divisors is an integer number (5795714400).

Almost surely, 2212755008893 is an apocalyptic number.

It is an amenable number.

212755008893 is a deficient number, since it is larger than the sum of its proper divisors (65439282307).

212755008893 is a wasteful number, since it uses less digits than its factorization.

212755008893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254290 (or 254283 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 50.

The spelling of 212755008893 in words is "two hundred twelve billion, seven hundred fifty-five million, eight thousand, eight hundred ninety-three".

Divisors: 1 7 19 29 31 49 133 203 217 551 589 899 931 1421 1519 3857 4123 6293 17081 26999 28861 44051 119567 254197 836969 1779379 4829743 7371713 7880107 12455653 33808201 51601991 55160749 140062547 149722033 228523103 236657407 361213937 386125243 980437829 1048054231 1599661721 4341938957 6863064803 7336379617 11197632047 30393572699 212755008893