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206046680945 = 57219474212237
BaseRepresentation
bin1011111111100101010…
…1101101011101110001
3201200211202011220101112
42333321111231131301
511333440422242240
6234353451243105
720613012614300
oct2777125553561
9650752156345
10206046680945
117a424a86086
1233b24749495
1316578c806b1
149d891a2437
15555e22d665
hex2ff956d771

206046680945 has 96 divisors (see below), whose sum is σ = 310077227520. Its totient is φ = 130635348480.

The previous prime is 206046680941. The next prime is 206046680969. The reversal of 206046680945 is 549086640602.

It is not a de Polignac number, because 206046680945 - 22 = 206046680941 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 206046680893 and 206046680902.

It is not an unprimeable number, because it can be changed into a prime (206046680941) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 92107367 + ... + 92109603.

It is an arithmetic number, because the mean of its divisors is an integer number (3229971120).

Almost surely, 2206046680945 is an apocalyptic number.

It is an amenable number.

206046680945 is a deficient number, since it is larger than the sum of its proper divisors (104030546575).

206046680945 is a wasteful number, since it uses less digits than its factorization.

206046680945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2743 (or 2736 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 50.

The spelling of 206046680945 in words is "two hundred six billion, forty-six million, six hundred eighty thousand, nine hundred forty-five".

Divisors: 1 5 7 19 35 47 49 95 133 235 245 329 421 665 893 931 1645 2105 2237 2303 2947 4465 4655 6251 7999 11185 11515 14735 15659 19787 20629 31255 39995 42503 43757 55993 78295 98935 103145 105139 109613 138509 212515 218785 279965 297521 375953 391951 525695 548065 692545 735973 941777 969563 1487605 1879765 1959755 1997641 2082647 2631671 3679865 4708885 4847815 5151811 6592439 9988205 10413235 13158355 13983487 17893763 18421697 25759055 32962195 44263519 46147073 69917435 89468815 92108485 97884409 125256341 221317595 230735365 309844633 489422045 626281705 841006861 876794387 1549223165 2168912431 4205034305 4383971935 5887048027 10844562155 29435240135 41209336189 206046680945