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12342658081 = 134123156957
BaseRepresentation
bin10110111111010111…
…00000010000100001
31011212011212222212111
423133223200100201
5200234210024311
65400425555321
7614601601615
oct133753402041
934764788774
1012342658081
115264121776
122485645b41
131219149ca0
14851337345
154c38a8d21
hex2dfae0421

12342658081 has 8 divisors (see below), whose sum is σ = 13616291304. Its totient is φ = 11115338880.

The previous prime is 12342658067. The next prime is 12342658151. The reversal of 12342658081 is 18085624321.

It can be written as a sum of positive squares in 4 ways, for example, as 982509025 + 11360149056 = 31345^2 + 106584^2 .

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 12342658081 - 25 = 12342658049 is a prime.

It is a super-2 number, since 2×123426580812 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12342658021) 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, 11577946 + ... + 11579011.

It is an arithmetic number, because the mean of its divisors is an integer number (1702036413).

Almost surely, 212342658081 is an apocalyptic number.

It is an amenable number.

12342658081 is a deficient number, since it is larger than the sum of its proper divisors (1273633223).

12342658081 is a wasteful number, since it uses less digits than its factorization.

12342658081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23157011.

The product of its (nonzero) digits is 92160, while the sum is 40.

The spelling of 12342658081 in words is "twelve billion, three hundred forty-two million, six hundred fifty-eight thousand, eighty-one".

Divisors: 1 13 41 533 23156957 301040441 949435237 12342658081