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8705968644245 = 513195432
BaseRepresentation
bin111111010110000010000…
…1010110010000010010101
31010211021121220221100021012
41332230010022302002111
52120114310433103440
630303244454102005
71555662006325025
oct176540412620225
933737556840235
108705968644245
1128571a9376674
12b8733734a905
134b1c7a79ba52
1422152a54da85
151016e000ee65
hex7eb042b2095

8705968644245 has 6 divisors (see below), whose sum is σ = 10447170290358. Its totient is φ = 6964769637224.

The previous prime is 8705968644127. The next prime is 8705968644257. The reversal of 8705968644245 is 5424468695078.

It can be written as a sum of positive squares in only one way, i.e., 6964774915396 + 1741193728849 = 2639086^2 + 1319543^2 .

It is not a de Polignac number, because 8705968644245 - 214 = 8705968627861 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5937944 + ... + 7257486.

It is an arithmetic number, because the mean of its divisors is an integer number (1741195048393).

Almost surely, 28705968644245 is an apocalyptic number.

It is an amenable number.

8705968644245 is a deficient number, since it is larger than the sum of its proper divisors (1741201646113).

8705968644245 is an frugal number, since it uses more digits than its factorization.

8705968644245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2639091 (or 1319548 counting only the distinct ones).

The product of its (nonzero) digits is 464486400, while the sum is 68.

The spelling of 8705968644245 in words is "eight trillion, seven hundred five billion, nine hundred sixty-eight million, six hundred forty-four thousand, two hundred forty-five".

Divisors: 1 5 1319543 6597715 1741193728849 8705968644245