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86905944043 = 131887747919
BaseRepresentation
bin101000011101111111…
…1110111011111101011
322022022121212101021021
41100323333313133223
52410440410202133
6103531331553311
76164416223152
oct1207377673753
9268277771237
1086905944043
113394715a056
1214a1475b837
13826cac8939
1442c6010599
1523d990952d
hex143bff77eb

86905944043 has 8 divisors (see below), whose sum is σ = 87668190720. Its totient is φ = 86145195240.

The previous prime is 86905944023. The next prime is 86905944091. The reversal of 86905944043 is 34044950968.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 86905944043 - 233 = 78316009451 is a prime.

It is a super-2 number, since 2×869059440432 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86905944023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257763 + ... + 490156.

It is an arithmetic number, because the mean of its divisors is an integer number (10958523840).

Almost surely, 286905944043 is an apocalyptic number.

86905944043 is a deficient number, since it is larger than the sum of its proper divisors (762246677).

86905944043 is a wasteful number, since it uses less digits than its factorization.

86905944043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748937.

The product of its (nonzero) digits is 3732480, while the sum is 52.

The spelling of 86905944043 in words is "eighty-six billion, nine hundred five million, nine hundred forty-four thousand, forty-three".

Divisors: 1 131 887 116197 747919 97977389 663404153 86905944043