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88808538681 = 3237385730869
BaseRepresentation
bin101001010110101100…
…1101100001000111001
322111020012221012110100
41102231121230020321
52423334441214211
6104444215110013
76262521060252
oct1225531541071
9274205835410
1088808538681
1134733117615
1215265972309
1384b402a495
144426991b29
15249b97b156
hex14ad66c239

88808538681 has 24 divisors (see below), whose sum is σ = 128777168520. Its totient is φ = 58976153856.

The previous prime is 88808538631. The next prime is 88808538683. The reversal of 88808538681 is 18683580888.

It can be written as a sum of positive squares in 4 ways, for example, as 12607696656 + 76200842025 = 112284^2 + 276045^2 .

It is not a de Polignac number, because 88808538681 - 26 = 88808538617 is a prime.

It is a super-2 number, since 2×888085386812 (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (88808538683) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2861515 + ... + 2892383.

It is an arithmetic number, because the mean of its divisors is an integer number (5365715355).

Almost surely, 288808538681 is an apocalyptic number.

It is an amenable number.

88808538681 is a deficient number, since it is larger than the sum of its proper divisors (39968629839).

88808538681 is a wasteful number, since it uses less digits than its factorization.

88808538681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32105 (or 32102 counting only the distinct ones).

The product of its (nonzero) digits is 23592960, while the sum is 63.

The spelling of 88808538681 in words is "eighty-eight billion, eight hundred eight million, five hundred thirty-eight thousand, six hundred eighty-one".

Divisors: 1 3 9 373 857 1119 2571 3357 7713 30869 92607 277821 319661 958983 2876949 11514137 26454733 34542411 79364199 103627233 238092597 9867615409 29602846227 88808538681