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212032120985 = 51719947138637
BaseRepresentation
bin1100010101111000011…
…0010110100010011001
3202021021212211202112222
43011132012112202121
511433220210332420
6241223424113425
721214232201636
oct3053606264231
9667255752488
10212032120985
1181a16671843
1235115165875
1316cc101c1a9
14a3960a118d
1557ae93c225
hex315e196899

212032120985 has 32 divisors (see below), whose sum is σ = 283886259840. Its totient is φ = 151084403712.

The previous prime is 212032120967. The next prime is 212032120991. The reversal of 212032120985 is 589021230212.

It is a cyclic number.

It is not a de Polignac number, because 212032120985 - 212 = 212032116889 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1460087 + ... + 1598723.

It is an arithmetic number, because the mean of its divisors is an integer number (8871445620).

Almost surely, 2212032120985 is an apocalyptic number.

It is an amenable number.

212032120985 is a deficient number, since it is larger than the sum of its proper divisors (71854138855).

212032120985 is a wasteful number, since it uses less digits than its factorization.

212032120985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139625.

The product of its (nonzero) digits is 17280, while the sum is 35.

The spelling of 212032120985 in words is "two hundred twelve billion, thirty-two million, one hundred twenty thousand, nine hundred eighty-five".

Divisors: 1 5 17 19 85 95 323 947 1615 4735 16099 17993 80495 89965 138637 305881 693185 1529405 2356829 2634103 11784145 13170515 44779751 131289239 223898755 656446195 2231917063 2494495541 11159585315 12472477705 42406424197 212032120985