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80243494120 = 2352119507523
BaseRepresentation
bin100101010111011100…
…0101000110011101000
321200010022021212010201
41022232320220303220
52303314313302440
6100510252321544
75540336305666
oct1125670506350
9250108255121
1080243494120
11310383a6899
12136754732b4
13774a70a18a
143c5323dc36
152149a6a19a
hex12aee28ce8

80243494120 has 32 divisors (see below), whose sum is σ = 181403557920. Its totient is φ = 31945273920.

The previous prime is 80243494117. The next prime is 80243494127. The reversal of 80243494120 is 2149434208.

It is a self number, because there is not a number n which added to its sum of digits gives 80243494120.

It is not an unprimeable number, because it can be changed into a prime (80243494127) 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, 4745322 + ... + 4762201.

It is an arithmetic number, because the mean of its divisors is an integer number (5668861185).

Almost surely, 280243494120 is an apocalyptic number.

It is an amenable number.

80243494120 is an abundant number, since it is smaller than the sum of its proper divisors (101160063800).

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

80243494120 is a wasteful number, since it uses less digits than its factorization.

80243494120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9507745 (or 9507741 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The spelling of 80243494120 in words is "eighty billion, two hundred forty-three million, four hundred ninety-four thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 211 422 844 1055 1688 2110 4220 8440 9507523 19015046 38030092 47537615 76060184 95075230 190150460 380300920 2006087353 4012174706 8024349412 10030436765 16048698824 20060873530 40121747060 80243494120