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68785250903577 = 32135318161285117
BaseRepresentation
bin11111010001111010100000…
…11100100010011000011001
3100000112210202101212221010200
433220331100130202120121
533003434143212403302
6402143301422332413
720326366432464615
oct1750752034423031
9300483671787120
1068785250903577
111aa0a72a9a864a
12786b06142a109
132c4c562870a10
1412db31c58a345
157e43e005781c
hex3e8f50722619

68785250903577 has 48 divisors (see below), whose sum is σ = 109620445426128. Its totient is φ = 41301265374720.

The previous prime is 68785250903563. The next prime is 68785250903587. The reversal of 68785250903577 is 77530905258786.

68785250903577 is a `hidden beast` number, since 6 + 8 + 7 + 8 + 525 + 0 + 90 + 3 + 5 + 7 + 7 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 20243709488601 + 48541541414976 = 4499301^2 + 6967176^2 .

It is not a de Polignac number, because 68785250903577 - 26 = 68785250903513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68785250903527) 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, 29520178 + ... + 31764939.

It is an arithmetic number, because the mean of its divisors is an integer number (2283759279711).

Almost surely, 268785250903577 is an apocalyptic number.

It is an amenable number.

68785250903577 is a deficient number, since it is larger than the sum of its proper divisors (40835194522551).

68785250903577 is a wasteful number, since it uses less digits than its factorization.

68785250903577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61285370 (or 61285367 counting only the distinct ones).

The product of its (nonzero) digits is 889056000, while the sum is 72.

The spelling of 68785250903577 in words is "sixty-eight trillion, seven hundred eighty-five billion, two hundred fifty million, nine hundred three thousand, five hundred seventy-seven".

Divisors: 1 3 9 13 39 53 117 159 181 477 543 689 1629 2067 2353 6201 7059 9593 21177 28779 86337 124709 374127 1122381 61285117 183855351 551566053 796706521 2390119563 3248111201 7170358689 9744333603 11092606177 29233000809 33277818531 42225445613 99833455593 126676336839 144203880301 380029010517 432611640903 587908127381 1297834922709 1763724382143 5291173146429 7642805655953 22928416967859 68785250903577