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67904511468 = 223121316972749
BaseRepresentation
bin111111001111011011…
…001001110111101100
320111021101022121000020
4333033123021313230
52103032023331333
651110033202140
74622510552433
oct771733116754
9214241277006
1067904511468
1126886365572
12111b1100350
136532279101
1434025c211a
151b7668a3b3
hexfcf6c9dec

67904511468 has 48 divisors (see below), whose sum is σ = 158725644000. Its totient is φ = 22594627584.

The previous prime is 67904511461. The next prime is 67904511487. The reversal of 67904511468 is 86411540976.

It is a super-2 number, since 2×679045114682 (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 67904511468.

It is not an unprimeable number, because it can be changed into a prime (67904511461) 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, 24700158 + ... + 24702906.

It is an arithmetic number, because the mean of its divisors is an integer number (3306784250).

Almost surely, 267904511468 is an apocalyptic number.

It is an amenable number.

67904511468 is an abundant number, since it is smaller than the sum of its proper divisors (90821132532).

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

67904511468 is a wasteful number, since it uses less digits than its factorization.

67904511468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5666 (or 5664 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 67904511468 in words is "sixty-seven billion, nine hundred four million, five hundred eleven thousand, four hundred sixty-eight".

Divisors: 1 2 3 4 6 12 1213 1697 2426 2749 3394 3639 4852 5091 5498 6788 7278 8247 10182 10996 14556 16494 20364 32988 2058461 3334537 4116922 4665053 6175383 6669074 8233844 9330106 10003611 12350766 13338148 13995159 18660212 20007222 24701532 27990318 40014444 55980636 5658709289 11317418578 16976127867 22634837156 33952255734 67904511468