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80790579057 = 3109918726893
BaseRepresentation
bin100101100111101111…
…1100110011101110001
321201112102201122120210
41023033133212131301
52310424342012212
6101040434254333
75560031406546
oct1131737463561
9251472648523
1080790579057
11312991a2901
12137a87273a9
137806b69886
143ca5b70bcd
15217cad453c
hex12cf7e6771

80790579057 has 16 divisors (see below), whose sum is σ = 108724911680. Its totient is φ = 53358460992.

The previous prime is 80790579029. The next prime is 80790579061. The reversal of 80790579057 is 75097509708.

It is not a de Polignac number, because 80790579057 - 28 = 80790578801 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80790578988 and 80790579006.

It is not an unprimeable number, because it can be changed into a prime (80790579157) 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, 2990703 + ... + 3017595.

It is an arithmetic number, because the mean of its divisors is an integer number (6795306980).

Almost surely, 280790579057 is an apocalyptic number.

It is an amenable number.

80790579057 is a deficient number, since it is larger than the sum of its proper divisors (27934332623).

80790579057 is a wasteful number, since it uses less digits than its factorization.

80790579057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36192.

The product of its (nonzero) digits is 5556600, while the sum is 57.

The spelling of 80790579057 in words is "eighty billion, seven hundred ninety million, five hundred seventy-nine thousand, fifty-seven".

Divisors: 1 3 109 327 9187 26893 27561 80679 1001383 2931337 3004149 8794011 247065991 741197973 26930193019 80790579057