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20886645070080 = 28345607331883
BaseRepresentation
bin1001011111111000011010…
…00011110101100100000000
32201221202002012120212010000
410233330031003311210000
510214201322114220310
6112231105311040000
74254003351535446
oct457741503654400
981852065525100
1020886645070080
116722a816a0369
122413b7b210000
13b867a9caa03a
14522cc1ac6b96
15263499c014c0
hex12ff0d0f5900

20886645070080 has 360 divisors, whose sum is σ = 74859585115392. Its totient is φ = 5560579362816.

The previous prime is 20886645070061. The next prime is 20886645070087. The reversal of 20886645070080 is 8007054668802.

It is a tau number, because it is divible by the number of its divisors (360).

It is a super-2 number, since 2×208866450700802 (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 20886645069999 and 20886645070026.

It is not an unprimeable number, because it can be changed into a prime (20886645070087) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 62767819 + ... + 63099701.

Almost surely, 220886645070080 is an apocalyptic number.

20886645070080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20886645070080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37429792557696).

20886645070080 is an abundant number, since it is smaller than the sum of its proper divisors (53972940045312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20886645070080 is an equidigital number, since it uses as much as digits as its factorization.

20886645070080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332523 (or 332500 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 54.

The spelling of 20886645070080 in words is "twenty trillion, eight hundred eighty-six billion, six hundred forty-five million, seventy thousand, eighty".