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80734685493 = 3711349500803
BaseRepresentation
bin100101100110000101…
…0011000100100110101
321201101112112222000210
41023030022120210311
52310321034413433
6101031120300033
75555452334550
oct1131412304465
9251345488023
1080734685493
113126a697180
1213791a71619
1377c83c9a67
143c9c581697
152177c43463
hex12cc298935

80734685493 has 16 divisors (see below), whose sum is σ = 134208308736. Its totient is φ = 41940096240.

The previous prime is 80734685477. The next prime is 80734685519. The reversal of 80734685493 is 39458643708.

It is not a de Polignac number, because 80734685493 - 24 = 80734685477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80734685693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174750171 + ... + 174750632.

It is an arithmetic number, because the mean of its divisors is an integer number (8388019296).

Almost surely, 280734685493 is an apocalyptic number.

It is an amenable number.

80734685493 is a deficient number, since it is larger than the sum of its proper divisors (53473623243).

80734685493 is a wasteful number, since it uses less digits than its factorization.

80734685493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349500824.

The product of its (nonzero) digits is 17418240, while the sum is 57.

The spelling of 80734685493 in words is "eighty billion, seven hundred thirty-four million, six hundred eighty-five thousand, four hundred ninety-three".

Divisors: 1 3 7 11 21 33 77 231 349500803 1048502409 2446505621 3844508833 7339516863 11533526499 26911561831 80734685493