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30123325270081 = 281107200445801
BaseRepresentation
bin1101101100101101000100…
…00110100010100001000001
310221122202120022221120222201
412312112202012202201001
512422020032232120311
6144022244203433201
76226224040032451
oct666264206424101
9127582508846881
1030123325270081
11966425988a86a
123466128825801
1313a6804515a44
14761d961a9d61
1537389bb749c1
hex1b65a21a2841

30123325270081 has 4 divisors (see below), whose sum is σ = 30230525716164. Its totient is φ = 30016124824000.

The previous prime is 30123325270043. The next prime is 30123325270099. The reversal of 30123325270081 is 18007252332103.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9746759120400 + 20376566149681 = 3121980^2 + 4514041^2 .

It is a cyclic number.

It is not a de Polignac number, because 30123325270081 - 219 = 30123324745793 is a prime.

It is a super-2 number, since 2×301233252700812 (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30123325270081.

It is not an unprimeable number, because it can be changed into a prime (30123325270481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53600222620 + ... + 53600223181.

It is an arithmetic number, because the mean of its divisors is an integer number (7557631429041).

Almost surely, 230123325270081 is an apocalyptic number.

It is an amenable number.

30123325270081 is a deficient number, since it is larger than the sum of its proper divisors (107200446083).

30123325270081 is a wasteful number, since it uses less digits than its factorization.

30123325270081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107200446082.

The product of its (nonzero) digits is 60480, while the sum is 37.

The spelling of 30123325270081 in words is "thirty trillion, one hundred twenty-three billion, three hundred twenty-five million, two hundred seventy thousand, eighty-one".

Divisors: 1 281 107200445801 30123325270081