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79813129984 = 287291535813
BaseRepresentation
bin100101001010100111…
…0111011011100000000
321122000022111002112021
41022111032323130000
52301424130124414
6100355440211224
75523562261030
oct1122516733400
9248008432467
1079813129984
1130937481955
1213575309b14
1376ac4c6c43
143c120138c0
152121da9c24
hex12953bb700

79813129984 has 72 divisors (see below), whose sum is σ = 188352228960. Its totient is φ = 33026101248.

The previous prime is 79813129937. The next prime is 79813130063. The reversal of 79813129984 is 48992131897.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 715939 + ... + 819874.

It is an arithmetic number, because the mean of its divisors is an integer number (2616003180).

Almost surely, 279813129984 is an apocalyptic number.

It is an amenable number.

79813129984 is an abundant number, since it is smaller than the sum of its proper divisors (108539098976).

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

79813129984 is a wasteful number, since it uses less digits than its factorization.

79813129984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1535865 (or 1535851 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 61.

The spelling of 79813129984 in words is "seventy-nine billion, eight hundred thirteen million, one hundred twenty-nine thousand, nine hundred eighty-four".

Divisors: 1 2 4 7 8 14 16 28 29 32 56 58 64 112 116 128 203 224 232 256 406 448 464 812 896 928 1624 1792 1856 3248 3712 6496 7424 12992 25984 51968 1535813 3071626 6143252 10750691 12286504 21501382 24573008 43002764 44538577 49146016 86005528 89077154 98292032 172011056 178154308 196584064 311770039 344022112 356308616 393168128 623540078 688044224 712617232 1247080156 1376088448 1425234464 2494160312 2752176896 2850468928 4988320624 5700937856 9976641248 11401875712 19953282496 39906564992 79813129984