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85786047071 = 17193122033889
BaseRepresentation
bin100111111100100111…
…1110011001001011111
322012102120120201102122
41033321033303021133
52401142212001241
6103224244413155
76124600240334
oct1177117631137
9265376521378
1085786047071
1133421a9496a
12147616a71bb
138121a9c6ca
14421b3b298b
15237144304b
hex13f93f325f

85786047071 has 32 divisors (see below), whose sum is σ = 98767411200. Its totient is φ = 73970288640.

The previous prime is 85786047043. The next prime is 85786047089. The reversal of 85786047071 is 17074068758.

It is a cyclic number.

It is not a de Polignac number, because 85786047071 - 230 = 84712305247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85786047091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22056695 + ... + 22060583.

It is an arithmetic number, because the mean of its divisors is an integer number (3086481600).

Almost surely, 285786047071 is an apocalyptic number.

85786047071 is a deficient number, since it is larger than the sum of its proper divisors (12981364129).

85786047071 is a wasteful number, since it uses less digits than its factorization.

85786047071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6159.

The product of its (nonzero) digits is 2634240, while the sum is 53.

The spelling of 85786047071 in words is "eighty-five billion, seven hundred eighty-six million, forty-seven thousand, seventy-one".

Divisors: 1 17 19 31 323 527 589 2203 3889 10013 37451 41857 66113 68293 73891 120559 711569 1160981 1256147 1297567 2049503 2290621 8567467 22058639 38940557 145646939 162781873 265591477 2767291841 4515055109 5046238063 85786047071