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80550145842 = 2323583696709
BaseRepresentation
bin100101100000100101…
…0011010111100110010
321200220200022101012220
41023001022122330302
52304431314131332
6101000525101510
75551051641225
oct1130112327462
9250820271186
1080550145842
1131185503871
12137400b7896
1377990c67ba
143c81c655bc
15216693ed2c
hex12c129af32

80550145842 has 16 divisors (see below), whose sum is σ = 168104652480. Its totient is φ = 25682655152.

The previous prime is 80550145789. The next prime is 80550145847. The reversal of 80550145842 is 24854105508.

It is a junction number, because it is equal to n+sod(n) for n = 80550145794 and 80550145803.

It is not an unprimeable number, because it can be changed into a prime (80550145847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291848217 + ... + 291848492.

It is an arithmetic number, because the mean of its divisors is an integer number (10506540780).

Almost surely, 280550145842 is an apocalyptic number.

80550145842 is an abundant number, since it is smaller than the sum of its proper divisors (87554506638).

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

80550145842 is a wasteful number, since it uses less digits than its factorization.

80550145842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583696737.

The product of its (nonzero) digits is 256000, while the sum is 42.

The spelling of 80550145842 in words is "eighty billion, five hundred fifty million, one hundred forty-five thousand, eight hundred forty-two".

Divisors: 1 2 3 6 23 46 69 138 583696709 1167393418 1751090127 3502180254 13425024307 26850048614 40275072921 80550145842