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80900471870 = 2580221100847
BaseRepresentation
bin100101101011000001…
…0110011110000111110
321201211002111210011222
41023112002303300332
52311141010044440
6101055401513342
75562534444011
oct1132602636076
9251732453158
1080900471870
1131345230a09
12138194a2852
1378238651ca
143cb65b9378
1521875902b5
hex12d60b3c3e

80900471870 has 16 divisors (see below), whose sum is σ = 145624108608. Its totient is φ = 32359464480.

The previous prime is 80900471857. The next prime is 80900471921. The reversal of 80900471870 is 7817400908.

It is a super-2 number, since 2×809004718702 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 751787 + ... + 852633.

It is an arithmetic number, because the mean of its divisors is an integer number (9101506788).

Almost surely, 280900471870 is an apocalyptic number.

80900471870 is a deficient number, since it is larger than the sum of its proper divisors (64723636738).

80900471870 is a wasteful number, since it uses less digits than its factorization.

80900471870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181075.

The product of its (nonzero) digits is 112896, while the sum is 44.

The spelling of 80900471870 in words is "eighty billion, nine hundred million, four hundred seventy-one thousand, eight hundred seventy".

Divisors: 1 2 5 10 80221 100847 160442 201694 401105 504235 802210 1008470 8090047187 16180094374 40450235935 80900471870