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67185485020 = 2254378122657
BaseRepresentation
bin111110100100100100…
…010010010011011100
320102102021100021011001
4332210210102103130
52100043441010040
650510430040044
74565630125423
oct764444222334
9212367307131
1067185485020
1126547500335
1211030349024
136449307784
143374cd42ba
151b334aa59a
hexfa49124dc

67185485020 has 24 divisors (see below), whose sum is σ = 144370671984. Its totient is φ = 26249212416.

The previous prime is 67185484999. The next prime is 67185485111. The reversal of 67185485020 is 2058458176.

It is a congruent number.

It is an unprimeable number.

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, 39060469 + ... + 39062188.

It is an arithmetic number, because the mean of its divisors is an integer number (6015444666).

Almost surely, 267185485020 is an apocalyptic number.

It is an amenable number.

67185485020 is an abundant number, since it is smaller than the sum of its proper divisors (77185186964).

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

67185485020 is a wasteful number, since it uses less digits than its factorization.

67185485020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78122709 (or 78122707 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 46.

The spelling of 67185485020 in words is "sixty-seven billion, one hundred eighty-five million, four hundred eighty-five thousand, twenty".

Divisors: 1 2 4 5 10 20 43 86 172 215 430 860 78122657 156245314 312490628 390613285 781226570 1562453140 3359274251 6718548502 13437097004 16796371255 33592742510 67185485020