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8681331868 = 2211197302997
BaseRepresentation
bin10000001010111001…
…01001110010011100
3211102000110100111221
420011130221302130
5120234410104433
63553235023124
7425063050306
oct100534516234
924360410457
108681331868
113755427140
12182343aaa4
13a84747381
145c4d82976
1535c23172d
hex205729c9c

8681331868 has 12 divisors (see below), whose sum is σ = 16573451832. Its totient is φ = 3946059920.

The previous prime is 8681331851. The next prime is 8681331871.

8681331868 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98651455 + ... + 98651542.

It is an arithmetic number, because the mean of its divisors is an integer number (1381120986).

Almost surely, 28681331868 is an apocalyptic number.

It is an amenable number.

8681331868 is a deficient number, since it is larger than the sum of its proper divisors (7892119964).

8681331868 is a wasteful number, since it uses less digits than its factorization.

8681331868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197303012 (or 197303010 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 52.

The square root of 8681331868 is about 93173.6650991040. The cubic root of 8681331868 is about 2055.2379924184.

The spelling of 8681331868 in words is "eight billion, six hundred eighty-one million, three hundred thirty-one thousand, eight hundred sixty-eight".

Divisors: 1 2 4 11 22 44 197302997 394605994 789211988 2170332967 4340665934 8681331868