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86688286866 = 232191371850179
BaseRepresentation
bin101000010111100000…
…1100100100010010010
322021202110022020202100
41100233001210202102
52410014200134431
6103453554501230
76156134165136
oct1205701444222
9267673266670
1086688286866
1133845306a95
1214973894816
13823699b6cc
1442a51533c6
1523c57634e6
hex142f064892

86688286866 has 48 divisors (see below), whose sum is σ = 199153375200. Its totient is φ = 27175414464.

The previous prime is 86688286849. The next prime is 86688286907. The reversal of 86688286866 is 66868288668.

It is a junction number, because it is equal to n+sod(n) for n = 86688286794 and 86688286803.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 878236 + ... + 971943.

It is an arithmetic number, because the mean of its divisors is an integer number (4149028650).

Almost surely, 286688286866 is an apocalyptic number.

86688286866 is an abundant number, since it is smaller than the sum of its proper divisors (112465088334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86688286866 is a wasteful number, since it uses less digits than its factorization.

86688286866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1850343 (or 1850340 counting only the distinct ones).

The product of its digits is 509607936, while the sum is 72.

The spelling of 86688286866 in words is "eighty-six billion, six hundred eighty-eight million, two hundred eighty-six thousand, eight hundred sixty-six".

Divisors: 1 2 3 6 9 18 19 38 57 114 137 171 274 342 411 822 1233 2466 2603 5206 7809 15618 23427 46854 1850179 3700358 5550537 11101074 16651611 33303222 35153401 70306802 105460203 210920406 253474523 316380609 506949046 632761218 760423569 1520847138 2281270707 4562541414 4816015937 9632031874 14448047811 28896095622 43344143433 86688286866