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80726605053 = 31912831103863
BaseRepresentation
bin100101100101110101…
…1100011110011111101
321201100222100102202020
41023023223203303331
52310312002330203
6101030231150353
75555323551453
oct1131353436375
9251328312666
1080726605053
1131266078226
121378b2153b9
1377c682ab33
143c9b47a9d3
152177199153
hex12cbae3cfd

80726605053 has 16 divisors (see below), whose sum is σ = 113388910080. Its totient is φ = 50945439024.

The previous prime is 80726605049. The next prime is 80726605079. The reversal of 80726605053 is 35050662708.

It is not a de Polignac number, because 80726605053 - 22 = 80726605049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80726604996 and 80726605014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80726605013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 478801 + ... + 625062.

It is an arithmetic number, because the mean of its divisors is an integer number (7086806880).

Almost surely, 280726605053 is an apocalyptic number.

It is an amenable number.

80726605053 is a deficient number, since it is larger than the sum of its proper divisors (32662305027).

80726605053 is a wasteful number, since it uses less digits than its factorization.

80726605053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105168.

The product of its (nonzero) digits is 302400, while the sum is 42.

The spelling of 80726605053 in words is "eighty billion, seven hundred twenty-six million, six hundred five thousand, fifty-three".

Divisors: 1 3 19 57 1283 3849 24377 73131 1103863 3311589 20973397 62920191 1416256229 4248768687 26908868351 80726605053