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57100989946 = 27111328521973
BaseRepresentation
bin110101001011011110…
…111111010111111010
312110101110120211120111
4311023132333113322
51413420323134241
642122024214534
74061005256230
oct651336772772
9173343524514
1057100989946
1122242024990
12b09700a44a
1354ccc74c20
142a99858950
151742eabc81
hexd4b7bf5fa

57100989946 has 32 divisors (see below), whose sum is σ = 115000599168. Its totient is φ = 20535819840.

The previous prime is 57100989943. The next prime is 57100989991. The reversal of 57100989946 is 64998900175.

It is not an unprimeable number, because it can be changed into a prime (57100989941) 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, 14258985 + ... + 14262988.

It is an arithmetic number, because the mean of its divisors is an integer number (3593768724).

Almost surely, 257100989946 is an apocalyptic number.

57100989946 is an abundant number, since it is smaller than the sum of its proper divisors (57899609222).

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

57100989946 is a wasteful number, since it uses less digits than its factorization.

57100989946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28522006.

The product of its (nonzero) digits is 4898880, while the sum is 58.

The spelling of 57100989946 in words is "fifty-seven billion, one hundred million, nine hundred eighty-nine thousand, nine hundred forty-six".

Divisors: 1 2 7 11 13 14 22 26 77 91 143 154 182 286 1001 2002 28521973 57043946 199653811 313741703 370785649 399307622 627483406 741571298 2196191921 2595499543 4078642139 4392383842 5190999086 8157284278 28550494973 57100989946