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80639260511872 = 27192367197239457
BaseRepresentation
bin10010010101011101001010…
…011110100100111010000000
3101120112001000201021201121111
4102111131022132210322000
541032143201142334442
6443301055335533104
722661665022611156
oct2225351236447200
9346461021251544
1080639260511872
112376aa11330367
12906451922a194
1335cc3325b802a
1415cad6510d3d6
1594c92b3bab17
hex49574a7a4e80

80639260511872 has 512 divisors, whose sum is σ = 181147456512000. Its totient is φ = 35580903063552.

The previous prime is 80639260511861. The next prime is 80639260511893. The reversal of 80639260511872 is 27811506293608.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 176453523868 + ... + 176453524324.

It is an arithmetic number, because the mean of its divisors is an integer number (353803626000).

Almost surely, 280639260511872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80639260511872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90573728256000).

80639260511872 is an abundant number, since it is smaller than the sum of its proper divisors (100508196000128).

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

80639260511872 is a wasteful number, since it uses less digits than its factorization.

80639260511872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016 (or 1004 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 58.

The spelling of 80639260511872 in words is "eighty trillion, six hundred thirty-nine billion, two hundred sixty million, five hundred eleven thousand, eight hundred seventy-two".