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868231863686 = 211101677577169
BaseRepresentation
bin11001010001001101010…
…01101101110110000110
310002000001120102112211002
430220212221231312012
5103211114324114221
61502505450013302
7116504411034215
oct14504651556606
93060046375732
10868231863686
11305240285890
12120329117232
1363b48cac305
14300461db07c
15178b859080b
hexca26a6dd86

868231863686 has 32 divisors (see below), whose sum is σ = 1436931666720. Its totient is φ = 390165568000.

The previous prime is 868231863659. The next prime is 868231863703. The reversal of 868231863686 is 686368132868.

868231863686 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1215710 + ... + 1792878.

It is an arithmetic number, because the mean of its divisors is an integer number (44904114585).

Almost surely, 2868231863686 is an apocalyptic number.

868231863686 is a deficient number, since it is larger than the sum of its proper divisors (568699803034).

868231863686 is a wasteful number, since it uses less digits than its factorization.

868231863686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577960.

The product of its digits is 95551488, while the sum is 65.

The spelling of 868231863686 in words is "eight hundred sixty-eight billion, two hundred thirty-one million, eight hundred sixty-three thousand, six hundred eighty-six".

Divisors: 1 2 11 22 101 202 677 1111 1354 2222 7447 14894 68377 136754 577169 752147 1154338 1504294 6348859 12697718 58294069 116588138 390743413 641234759 781486826 1282469518 4298177543 8596355086 39465084713 78930169426 434115931843 868231863686