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57663353220 = 22351187368717
BaseRepresentation
bin110101101101000000…
…001111000110000100
312111211122202211221220
4311231000033012010
51421043304300340
642253513440340
74110644262264
oct655500170604
9174748684856
1057663353220
1122500506820
12b2134100b0
13558c623865
142b104057a4
151777542ed0
hexd6d00f184

57663353220 has 48 divisors (see below), whose sum is σ = 176135335488. Its totient is φ = 13978994560.

The previous prime is 57663353203. The next prime is 57663353227. The reversal of 57663353220 is 2235336675.

It is not an unprimeable number, because it can be changed into a prime (57663353227) 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, 43683699 + ... + 43685018.

It is an arithmetic number, because the mean of its divisors is an integer number (3669486156).

Almost surely, 257663353220 is an apocalyptic number.

It is an amenable number.

57663353220 is an abundant number, since it is smaller than the sum of its proper divisors (118471982268).

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

57663353220 is a wasteful number, since it uses less digits than its factorization.

57663353220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87368740 (or 87368738 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 42.

Adding to 57663353220 its reverse (2235336675), we get a palindrome (59898689895).

The spelling of 57663353220 in words is "fifty-seven billion, six hundred sixty-three million, three hundred fifty-three thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 10 11 12 15 20 22 30 33 44 55 60 66 110 132 165 220 330 660 87368717 174737434 262106151 349474868 436843585 524212302 873687170 961055887 1048424604 1310530755 1747374340 1922111774 2621061510 2883167661 3844223548 4805279435 5242123020 5766335322 9610558870 11532670644 14415838305 19221117740 28831676610 57663353220