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80621212084 = 22729392325309
BaseRepresentation
bin100101100010101100…
…1100001000110110100
321201002122000220202221
41023011121201012310
52310103012241314
6101011544212124
75552603665360
oct1130531410664
9251078026687
1080621212084
11312116329a6
121375ba6a044
1377aaa4972a
143c8b4842a0
15216cccb824
hex12c56611b4

80621212084 has 48 divisors (see below), whose sum is σ = 166851619200. Its totient is φ = 33350679936.

The previous prime is 80621212051. The next prime is 80621212099. The reversal of 80621212084 is 48021212608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3172822 + ... + 3198130.

It is an arithmetic number, because the mean of its divisors is an integer number (3476075400).

Almost surely, 280621212084 is an apocalyptic number.

It is an amenable number.

80621212084 is an abundant number, since it is smaller than the sum of its proper divisors (86230407116).

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

80621212084 is a wasteful number, since it uses less digits than its factorization.

80621212084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29272 (or 29270 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 34.

The spelling of 80621212084 in words is "eighty billion, six hundred twenty-one million, two hundred twelve thousand, eighty-four".

Divisors: 1 2 4 7 14 28 29 58 116 203 406 812 3923 7846 15692 25309 27461 50618 54922 101236 109844 113767 177163 227534 354326 455068 708652 733961 796369 1467922 1592738 2935844 3185476 5137727 10275454 20550908 99287207 198574414 397148828 695010449 1390020898 2780041796 2879329003 5758658006 11517316012 20155303021 40310606042 80621212084