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80701637080 = 2359720799391
BaseRepresentation
bin100101100101000110…
…0010100000111011000
321201022020100221010111
41023022030110013120
52310234104341310
6101023540054104
75554601411521
oct1131214240730
9251266327114
1080701637080
1131252a74439
1213782994334
1377c15c839c
143c9801b848
152174db628a
hex12ca3141d8

80701637080 has 32 divisors (see below), whose sum is σ = 183450637440. Its totient is φ = 31947863040.

The previous prime is 80701637033. The next prime is 80701637083. The reversal of 80701637080 is 8073610708.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80701637083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10395816 + ... + 10403575.

It is an arithmetic number, because the mean of its divisors is an integer number (5732832420).

Almost surely, 280701637080 is an apocalyptic number.

It is an amenable number.

80701637080 is an abundant number, since it is smaller than the sum of its proper divisors (102749000360).

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

80701637080 is a wasteful number, since it uses less digits than its factorization.

80701637080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20799499 (or 20799495 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The spelling of 80701637080 in words is "eighty billion, seven hundred one million, six hundred thirty-seven thousand, eighty".

Divisors: 1 2 4 5 8 10 20 40 97 194 388 485 776 970 1940 3880 20799391 41598782 83197564 103996955 166395128 207993910 415987820 831975640 2017540927 4035081854 8070163708 10087704635 16140327416 20175409270 40350818540 80701637080